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CERTFR-2026-AVI-0341
Vulnerability from certfr_avis - Published: 2026-03-23 - Updated: 2026-03-23
De multiples vulnérabilités ont été découvertes dans les produits Microsoft. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Microsoft | N/A | azl3 libexif 0.6.24-1 versions antérieures à 0.6.24-2 | ||
| Microsoft | N/A | azl3 kernel 6.6.126.1-1 versions antérieures à 6.6.129.1-1 | ||
| Microsoft | N/A | azl3 nghttp2 1.61.0-2 versions antérieures à 1.61.0-3 | ||
| Microsoft | N/A | azl3 pyOpenSSL 24.2.1-1 versions antérieures à 24.2.1-2 |
References
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "azl3 libexif 0.6.24-1 versions ant\u00e9rieures \u00e0 0.6.24-2",
"product": {
"name": "N/A",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "azl3 kernel 6.6.126.1-1 versions ant\u00e9rieures \u00e0 6.6.129.1-1",
"product": {
"name": "N/A",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "azl3 nghttp2 1.61.0-2 versions ant\u00e9rieures \u00e0 1.61.0-3",
"product": {
"name": "N/A",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "azl3 pyOpenSSL 24.2.1-1 versions ant\u00e9rieures \u00e0 24.2.1-2",
"product": {
"name": "N/A",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
}
],
"affected_systems_content": null,
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-27135",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-27135"
},
{
"name": "CVE-2025-71265",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-71265"
},
{
"name": "CVE-2025-71239",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-71239"
},
{
"name": "CVE-2026-32775",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-32775"
},
{
"name": "CVE-2025-71267",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-71267"
},
{
"name": "CVE-2026-23267",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23267"
},
{
"name": "CVE-2026-23259",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23259"
},
{
"name": "CVE-2026-23243",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23243"
},
{
"name": "CVE-2026-23242",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23242"
},
{
"name": "CVE-2026-27459",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-27459"
},
{
"name": "CVE-2026-27448",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-27448"
},
{
"name": "CVE-2026-23233",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23233"
},
{
"name": "CVE-2026-23266",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23266"
},
{
"name": "CVE-2025-71266",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-71266"
},
{
"name": "CVE-2026-23241",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23241"
},
{
"name": "CVE-2026-23248",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23248"
}
],
"initial_release_date": "2026-03-23T00:00:00",
"last_revision_date": "2026-03-23T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0341",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-03-23T00:00:00.000000"
}
],
"risks": [
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Microsoft. Elles permettent \u00e0 un attaquant de provoquer un probl\u00e8me de s\u00e9curit\u00e9 non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Microsoft",
"vendor_advisories": [
{
"published_at": "2026-03-19",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-27448",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27448"
},
{
"published_at": "2026-03-19",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2025-71265",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-71265"
},
{
"published_at": "2026-03-19",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-23243",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23243"
},
{
"published_at": "2026-03-20",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-27135",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27135"
},
{
"published_at": "2026-03-18",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-23241",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23241"
},
{
"published_at": "2026-03-19",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2025-71267",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-71267"
},
{
"published_at": "2026-03-20",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-23266",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23266"
},
{
"published_at": "2026-03-20",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-23259",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23259"
},
{
"published_at": "2026-03-20",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-23267",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23267"
},
{
"published_at": "2026-03-19",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-23248",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23248"
},
{
"published_at": "2026-03-19",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-23233",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23233"
},
{
"published_at": "2026-03-18",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2025-71239",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-71239"
},
{
"published_at": "2026-03-17",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-32775",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32775"
},
{
"published_at": "2026-03-19",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2025-71266",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-71266"
},
{
"published_at": "2026-03-19",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-27459",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27459"
},
{
"published_at": "2026-03-19",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft CVE-2026-23242",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23242"
}
]
}
CVE-2026-23266 (GCVE-0-2026-23266)
Vulnerability from cvelistv5 – Published: 2026-03-18 17:44 – Updated: 2026-05-11 22:03
VLAI
EPSS
Title
fbdev: rivafb: fix divide error in nv3_arb()
Summary
In the Linux kernel, the following vulnerability has been resolved:
fbdev: rivafb: fix divide error in nv3_arb()
A userspace program can trigger the RIVA NV3 arbitration code by calling
the FBIOPUT_VSCREENINFO ioctl on /dev/fb*. When doing so, the driver
recomputes FIFO arbitration parameters in nv3_arb(), using state->mclk_khz
(derived from the PRAMDAC MCLK PLL) as a divisor without validating it
first.
In a normal setup, state->mclk_khz is provided by the real hardware and is
non-zero. However, an attacker can construct a malicious or misconfigured
device (e.g. a crafted/emulated PCI device) that exposes a bogus PLL
configuration, causing state->mclk_khz to become zero. Once
nv3_get_param() calls nv3_arb(), the division by state->mclk_khz in the gns
calculation causes a divide error and crashes the kernel.
Fix this by checking whether state->mclk_khz is zero and bailing out before
doing the division.
The following log reveals it:
rivafb: setting virtual Y resolution to 2184
divide error: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 PID: 2187 Comm: syz-executor.0 Not tainted 5.18.0-rc1+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:nv3_arb drivers/video/fbdev/riva/riva_hw.c:439 [inline]
RIP: 0010:nv3_get_param+0x3ab/0x13b0 drivers/video/fbdev/riva/riva_hw.c:546
Call Trace:
nv3CalcArbitration.constprop.0+0x255/0x460 drivers/video/fbdev/riva/riva_hw.c:603
nv3UpdateArbitrationSettings drivers/video/fbdev/riva/riva_hw.c:637 [inline]
CalcStateExt+0x447/0x1b90 drivers/video/fbdev/riva/riva_hw.c:1246
riva_load_video_mode+0x8a9/0xea0 drivers/video/fbdev/riva/fbdev.c:779
rivafb_set_par+0xc0/0x5f0 drivers/video/fbdev/riva/fbdev.c:1196
fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1033
do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1109
fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1188
__x64_sys_ioctl+0x122/0x190 fs/ioctl.c:856
Severity
No CVSS data available.
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/ec5a58f4fd5818755… | |
| https://git.kernel.org/stable/c/52916878db2b8e376… | |
| https://git.kernel.org/stable/c/526460a96c5443e2f… | |
| https://git.kernel.org/stable/c/78daf5984d96edec3… | |
| https://git.kernel.org/stable/c/9efa0dc46270a8723… | |
| https://git.kernel.org/stable/c/3e4cbd1d46c246dfa… | |
| https://git.kernel.org/stable/c/73f0391e92d404da6… | |
| https://git.kernel.org/stable/c/0209e21e3c372fa2d… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ec5a58f4fd581875593ea92a65485e1906a53c0f
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 52916878db2b8e3769743a94484729f0844352df (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 526460a96c5443e2fc0fd231edd1f9c49d2de26b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 78daf5984d96edec3b920c72a93bd6821b8710b7 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9efa0dc46270a8723c158c64afbcf1dead72b28c (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3e4cbd1d46c246dfa684c8e9d8c20ae0b960c50a (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 73f0391e92d404da68f7484e57c106c5e673dc7e (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0209e21e3c372fa2da04c39214bec0b64e4eb5f4 (git) |
|
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.251 , ≤ 5.10.* (semver) Unaffected: 5.15.201 , ≤ 5.15.* (semver) Unaffected: 6.1.164 , ≤ 6.1.* (semver) Unaffected: 6.6.127 , ≤ 6.6.* (semver) Unaffected: 6.12.74 , ≤ 6.12.* (semver) Unaffected: 6.18.13 , ≤ 6.18.* (semver) Unaffected: 6.19.3 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
{
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},
{
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{
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"cpeApplicability": [
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: rivafb: fix divide error in nv3_arb()\n\nA userspace program can trigger the RIVA NV3 arbitration code by calling\nthe FBIOPUT_VSCREENINFO ioctl on /dev/fb*. When doing so, the driver\nrecomputes FIFO arbitration parameters in nv3_arb(), using state-\u003emclk_khz\n(derived from the PRAMDAC MCLK PLL) as a divisor without validating it\nfirst.\n\nIn a normal setup, state-\u003emclk_khz is provided by the real hardware and is\nnon-zero. However, an attacker can construct a malicious or misconfigured\ndevice (e.g. a crafted/emulated PCI device) that exposes a bogus PLL\nconfiguration, causing state-\u003emclk_khz to become zero. Once\nnv3_get_param() calls nv3_arb(), the division by state-\u003emclk_khz in the gns\ncalculation causes a divide error and crashes the kernel.\n\nFix this by checking whether state-\u003emclk_khz is zero and bailing out before\ndoing the division.\n\nThe following log reveals it:\n\nrivafb: setting virtual Y resolution to 2184\ndivide error: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 0 PID: 2187 Comm: syz-executor.0 Not tainted 5.18.0-rc1+ #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014\nRIP: 0010:nv3_arb drivers/video/fbdev/riva/riva_hw.c:439 [inline]\nRIP: 0010:nv3_get_param+0x3ab/0x13b0 drivers/video/fbdev/riva/riva_hw.c:546\nCall Trace:\n nv3CalcArbitration.constprop.0+0x255/0x460 drivers/video/fbdev/riva/riva_hw.c:603\n nv3UpdateArbitrationSettings drivers/video/fbdev/riva/riva_hw.c:637 [inline]\n CalcStateExt+0x447/0x1b90 drivers/video/fbdev/riva/riva_hw.c:1246\n riva_load_video_mode+0x8a9/0xea0 drivers/video/fbdev/riva/fbdev.c:779\n rivafb_set_par+0xc0/0x5f0 drivers/video/fbdev/riva/fbdev.c:1196\n fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1033\n do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1109\n fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1188\n __x64_sys_ioctl+0x122/0x190 fs/ioctl.c:856"
}
],
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CVE-2026-23267 (GCVE-0-2026-23267)
Vulnerability from cvelistv5 – Published: 2026-03-18 17:46 – Updated: 2026-05-11 22:03
VLAI
EPSS
Title
f2fs: fix IS_CHECKPOINTED flag inconsistency issue caused by concurrent atomic commit and checkpoint writes
Summary
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix IS_CHECKPOINTED flag inconsistency issue caused by concurrent atomic commit and checkpoint writes
During SPO tests, when mounting F2FS, an -EINVAL error was returned from
f2fs_recover_inode_page. The issue occurred under the following scenario
Thread A Thread B
f2fs_ioc_commit_atomic_write
- f2fs_do_sync_file // atomic = true
- f2fs_fsync_node_pages
: last_folio = inode folio
: schedule before folio_lock(last_folio) f2fs_write_checkpoint
- block_operations// writeback last_folio
- schedule before f2fs_flush_nat_entries
: set_fsync_mark(last_folio, 1)
: set_dentry_mark(last_folio, 1)
: folio_mark_dirty(last_folio)
- __write_node_folio(last_folio)
: f2fs_down_read(&sbi->node_write)//block
- f2fs_flush_nat_entries
: {struct nat_entry}->flag |= BIT(IS_CHECKPOINTED)
- unblock_operations
: f2fs_up_write(&sbi->node_write)
f2fs_write_checkpoint//return
: f2fs_do_write_node_page()
f2fs_ioc_commit_atomic_write//return
SPO
Thread A calls f2fs_need_dentry_mark(sbi, ino), and the last_folio has
already been written once. However, the {struct nat_entry}->flag did not
have the IS_CHECKPOINTED set, causing set_dentry_mark(last_folio, 1) and
write last_folio again after Thread B finishes f2fs_write_checkpoint.
After SPO and reboot, it was detected that {struct node_info}->blk_addr
was not NULL_ADDR because Thread B successfully write the checkpoint.
This issue only occurs in atomic write scenarios. For regular file
fsync operations, the folio must be dirty. If
block_operations->f2fs_sync_node_pages successfully submit the folio
write, this path will not be executed. Otherwise, the
f2fs_write_checkpoint will need to wait for the folio write submission
to complete, as sbi->nr_pages[F2FS_DIRTY_NODES] > 0. Therefore, the
situation where f2fs_need_dentry_mark checks that the {struct
nat_entry}->flag /wo the IS_CHECKPOINTED flag, but the folio write has
already been submitted, will not occur.
Therefore, for atomic file fsync, sbi->node_write should be acquired
through __write_node_folio to ensure that the IS_CHECKPOINTED flag
correctly indicates that the checkpoint write has been completed.
Severity
No CVSS data available.
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/32bc3c9fe18881d50… | |
| https://git.kernel.org/stable/c/75e19da068adf0dc5… | |
| https://git.kernel.org/stable/c/962c167b0f262b996… | |
| https://git.kernel.org/stable/c/bd66b4c487d5091d2… | |
| https://git.kernel.org/stable/c/ed81bc5885460905f… | |
| https://git.kernel.org/stable/c/7633a7387eb4d0259… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
608514deba38c8611ad330d6a3c8e2b9a1f68e4b , < 32bc3c9fe18881d50dd51fd5f26d19fe1190dc0d
(git)
Affected: 608514deba38c8611ad330d6a3c8e2b9a1f68e4b , < 75e19da068adf0dc5dd269dd157392434b9117d4 (git) Affected: 608514deba38c8611ad330d6a3c8e2b9a1f68e4b , < 962c167b0f262b9962207fbeaa531721d55ea00e (git) Affected: 608514deba38c8611ad330d6a3c8e2b9a1f68e4b , < bd66b4c487d5091d2a65d6089e0de36f0c26a4c7 (git) Affected: 608514deba38c8611ad330d6a3c8e2b9a1f68e4b , < ed81bc5885460905f9160e7b463e5708fd056324 (git) Affected: 608514deba38c8611ad330d6a3c8e2b9a1f68e4b , < 7633a7387eb4d0259d6bea945e1d3469cd135bbc (git) |
|
| Linux | Linux |
Affected:
4.7
Unaffected: 0 , < 4.7 (semver) Unaffected: 6.1.164 , ≤ 6.1.* (semver) Unaffected: 6.6.127 , ≤ 6.6.* (semver) Unaffected: 6.12.74 , ≤ 6.12.* (semver) Unaffected: 6.18.13 , ≤ 6.18.* (semver) Unaffected: 6.19.3 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix IS_CHECKPOINTED flag inconsistency issue caused by concurrent atomic commit and checkpoint writes\n\nDuring SPO tests, when mounting F2FS, an -EINVAL error was returned from\nf2fs_recover_inode_page. The issue occurred under the following scenario\n\nThread A Thread B\nf2fs_ioc_commit_atomic_write\n - f2fs_do_sync_file // atomic = true\n - f2fs_fsync_node_pages\n : last_folio = inode folio\n : schedule before folio_lock(last_folio) f2fs_write_checkpoint\n - block_operations// writeback last_folio\n - schedule before f2fs_flush_nat_entries\n : set_fsync_mark(last_folio, 1)\n : set_dentry_mark(last_folio, 1)\n : folio_mark_dirty(last_folio)\n - __write_node_folio(last_folio)\n : f2fs_down_read(\u0026sbi-\u003enode_write)//block\n - f2fs_flush_nat_entries\n : {struct nat_entry}-\u003eflag |= BIT(IS_CHECKPOINTED)\n - unblock_operations\n : f2fs_up_write(\u0026sbi-\u003enode_write)\n f2fs_write_checkpoint//return\n : f2fs_do_write_node_page()\nf2fs_ioc_commit_atomic_write//return\n SPO\n\nThread A calls f2fs_need_dentry_mark(sbi, ino), and the last_folio has\nalready been written once. However, the {struct nat_entry}-\u003eflag did not\nhave the IS_CHECKPOINTED set, causing set_dentry_mark(last_folio, 1) and\nwrite last_folio again after Thread B finishes f2fs_write_checkpoint.\n\nAfter SPO and reboot, it was detected that {struct node_info}-\u003eblk_addr\nwas not NULL_ADDR because Thread B successfully write the checkpoint.\n\nThis issue only occurs in atomic write scenarios. For regular file\nfsync operations, the folio must be dirty. If\nblock_operations-\u003ef2fs_sync_node_pages successfully submit the folio\nwrite, this path will not be executed. Otherwise, the\nf2fs_write_checkpoint will need to wait for the folio write submission\nto complete, as sbi-\u003enr_pages[F2FS_DIRTY_NODES] \u003e 0. Therefore, the\nsituation where f2fs_need_dentry_mark checks that the {struct\nnat_entry}-\u003eflag /wo the IS_CHECKPOINTED flag, but the folio write has\nalready been submitted, will not occur.\n\nTherefore, for atomic file fsync, sbi-\u003enode_write should be acquired\nthrough __write_node_folio to ensure that the IS_CHECKPOINTED flag\ncorrectly indicates that the checkpoint write has been completed."
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CVE-2026-27135 (GCVE-0-2026-27135)
Vulnerability from cvelistv5 – Published: 2026-03-18 17:59 – Updated: 2026-06-30 12:08
VLAI
EPSS
Title
nghttp2 Denial of service: Assertion failure due to the missing state validation
Summary
nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. Prior to version 1.68.1, the nghttp2 library stops reading the incoming data when user facing public API `nghttp2_session_terminate_session` or `nghttp2_session_terminate_session2` is called by the application. They might be called internally by the library when it detects the situation that is subject to connection error. Due to the missing internal state validation, the library keeps reading the rest of the data after one of those APIs is called. Then receiving a malformed frame that causes FRAME_SIZE_ERROR causes assertion failure. nghttp2 v1.68.1 adds missing state validation to avoid assertion failure. No known workarounds are available.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
54 references
| URL | Tags |
|---|---|
| https://github.com/nghttp2/nghttp2/security/advis… | x_refsource_CONFIRM |
| https://github.com/nghttp2/nghttp2/commit/5c7df8f… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2026/03/20/3 | |
| https://lists.debian.org/debian-lts-announce/2026… | |
| https://access.redhat.com/security/cve/CVE-2026-27135 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2448754 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:27200 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:21695 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13812 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:21690 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:15087 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14773 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:20087 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:17596 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:21656 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:20040 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8868 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7310 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7666 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7080 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7675 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8339 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7123 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7670 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:9711 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:9874 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7983 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7896 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7302 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7350 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7667 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8541 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8539 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8538 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8540 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8546 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8545 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8547 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8548 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7668 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:25096 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19724 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19725 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:16008 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:16030 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:16009 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:16174 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14937 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:6190 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:9832 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:27201 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:11768 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:10065 | vendor-advisoryx_refsource_REDHAT |
Impacted products
47 products
| Vendor | Product | Version | |
|---|---|---|---|
| nghttp2 | nghttp2 |
Affected:
< 1.68.1
|
|
| Red Hat | Red Hat JBoss Core Services on RHEL 7 Server |
cpe:/a:redhat:jboss_core_services:1::el7 |
|
| Red Hat | Red Hat JBoss Core Services on RHEL 8 |
cpe:/a:redhat:jboss_core_services:1::el8 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.12 |
cpe:/a:redhat:openshift:4.12::el8 |
|
| Red Hat | Middleware Containers for OpenShift |
cpe:/a:redhat:rhosemc:1.0::el8 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.13 |
cpe:/a:redhat:openshift:4.13::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.14 |
cpe:/a:redhat:openshift:4.14::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.15 |
cpe:/a:redhat:openshift:4.15::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.16 |
cpe:/a:redhat:openshift:4.16::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.17 |
cpe:/a:redhat:openshift:4.17::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.18 |
cpe:/a:redhat:openshift:4.18::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.19 |
cpe:/a:redhat:openshift:4.19::el9 |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 |
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cpe:/o:redhat:rhel_e4s:8.8::baseos |
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cpe:/o:redhat:rhel_tus:8.8::baseos |
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cpe:/a:redhat:jboss_core_services:1 |
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CVE-2026-27448 (GCVE-0-2026-27448)
Vulnerability from cvelistv5 – Published: 2026-03-17 23:24 – Updated: 2026-03-18 20:18
VLAI
EPSS
Title
pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback
Summary
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 0.14.0 and prior to version 26.0.0, if a user provided callback to `set_tlsext_servername_callback` raised an unhandled exception, this would result in a connection being accepted. If a user was relying on this callback for any security-sensitive behavior, this could allow bypassing it. Starting in version 26.0.0, unhandled exceptions now result in rejecting the connection.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-636 - Not Failing Securely ('Failing Open')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/pyca/pyopenssl/security/adviso… | x_refsource_CONFIRM |
| https://github.com/pyca/pyopenssl/commit/d41a8147… | x_refsource_MISC |
| https://github.com/pyca/pyopenssl/blob/358cbf29c4… | x_refsource_MISC |
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CVE-2026-27459 (GCVE-0-2026-27459)
Vulnerability from cvelistv5 – Published: 2026-03-17 23:34 – Updated: 2026-07-01 12:04
VLAI
EPSS
Title
pyOpenSSL DTLS cookie callback buffer overflow
Summary
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values that are too long are now rejected.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
23 references
| URL | Tags |
|---|---|
| https://github.com/pyca/pyopenssl/security/adviso… | x_refsource_CONFIRM |
| https://github.com/pyca/pyopenssl/commit/57f09bb4… | x_refsource_MISC |
| https://github.com/pyca/pyopenssl/blob/358cbf29c4… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-27459 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2448503 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:13512 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:10754 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14874 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13508 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14873 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14835 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13553 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13545 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7224 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:11916 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:11856 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:21017 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24853 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19375 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22465 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:11996 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8437 | vendor-advisoryx_refsource_REDHAT |
Impacted products
31 products
| Vendor | Product | Version | |
|---|---|---|---|
| pyca | pyopenssl |
Affected:
>= 22.0.0, < 26.0.0
|
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
cpe:/a:redhat:ansible_automation_platform:2.5::el8 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 |
|
| Red Hat | RHUI 4 for RHEL 8 |
cpe:/a:redhat:rhui:4::el8 |
|
| Red Hat | Red Hat Satellite 6.16 for RHEL 8 |
cpe:/a:redhat:satellite:6.16::el8 cpe:/a:redhat:satellite_capsule:6.16::el8 cpe:/a:redhat:satellite_utils:6.16::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
cpe:/a:redhat:ansible_automation_platform:2.5::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
cpe:/a:redhat:ansible_automation_platform:2.6::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9 |
|
| Red Hat | Red Hat Satellite 6.16 for RHEL 9 |
cpe:/a:redhat:satellite:6.16::el9 cpe:/a:redhat:satellite_capsule:6.16::el9 cpe:/a:redhat:satellite_utils:6.16::el9 |
|
| Red Hat | Red Hat Satellite 6.17 for RHEL 9 |
cpe:/a:redhat:satellite:6.17::el9 cpe:/a:redhat:satellite_capsule:6.17::el9 cpe:/a:redhat:satellite_utils:6.17::el9 |
|
| Red Hat | Red Hat Satellite 6.18 for RHEL 9 |
cpe:/a:redhat:satellite:6.18::el9 cpe:/a:redhat:satellite_capsule:6.18::el9 cpe:/a:redhat:satellite_maintenance:6.18::el9 cpe:/a:redhat:satellite_utils:6.18::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 |
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
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cpe:/o:redhat:enterprise_linux:6 |
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cpe:/o:redhat:enterprise_linux:8 |
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cpe:/a:redhat:openstack:17.1 |
|
| Red Hat | Red Hat OpenStack Platform 18.0 |
cpe:/a:redhat:openstack:18.0 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
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CVE-2026-32775 (GCVE-0-2026-32775)
Vulnerability from cvelistv5 – Published: 2026-03-16 06:31 – Updated: 2026-04-12 18:23
VLAI
EPSS
Summary
libexif through 0.6.25 has a flaw in decoding MakerNotes. If the exif_mnote_data_get_value function gets passed in a 0 size, the passed in-buffer would be overwritten due to an integer underflow.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| libexif project | libexif |
Affected:
0 , ≤ 0.6.25
(semver)
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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