Vulnerability-Lookup

alsa-2026:38491

Vulnerability from osv_almalinux

Published

2026-07-13 00:00

Modified

2026-07-13 20:54

Summary

Important: kernel security, bug fix, and enhancement update

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: Linux kernel: Memory leak in networking due to incorrect GRO packet handling (CVE-2026-22979)
kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499)
kernel: net: bridge: use a stable FDB dst snapshot in RCU readers (CVE-2026-46086)
kernel: crypto: ccp - copy IV using skcipher ivsize (CVE-2026-53016)
kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166)

Bug Fix(es) and Enhancement(s):

Kernel panic very early during boot while reading a tracefs file (available_filter_functions) due to invalid module name pointer [9.8.z] (JIRA:AlmaLinux-183236)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:38491	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-22979	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43499	REPORT
	https://access.redhat.com/security/cve/CVE-2026-46086	REPORT
	https://access.redhat.com/security/cve/CVE-2026-53016	REPORT
	https://access.redhat.com/security/cve/CVE-2026-53166	REPORT
	https://bugzilla.redhat.com/2432402	REPORT
	https://bugzilla.redhat.com/2480453	REPORT
	https://bugzilla.redhat.com/2481989	REPORT
	https://bugzilla.redhat.com/2492269	REPORT
	https://bugzilla.redhat.com/2492805	REPORT
	https://errata.almalinux.org/9/ALSA-2026-38491.html	ADVISORY

JSON

To clipboard

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  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.  \n\nSecurity Fix(es):  \n\n  * kernel: Linux kernel: Memory leak in networking due to incorrect GRO packet handling (CVE-2026-22979)\n  * kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499)\n  * kernel: net: bridge: use a stable FDB dst snapshot in RCU readers (CVE-2026-46086)\n  * kernel: crypto: ccp - copy IV using skcipher ivsize (CVE-2026-53016)\n  * kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * Kernel panic very early during boot while reading a tracefs file (available_filter_functions) due to invalid module name pointer [9.8.z] (JIRA:AlmaLinux-183236)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:38491",
  "modified": "2026-07-13T20:54:09Z",
  "published": "2026-07-13T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:38491"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-22979"
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    {
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      "url": "https://access.redhat.com/security/cve/CVE-2026-43499"
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    {
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      "url": "https://access.redhat.com/security/cve/CVE-2026-46086"
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    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-53016"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-53166"
    },
    {
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      "url": "https://bugzilla.redhat.com/2432402"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2480453"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2481989"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2492269"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2492805"
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    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-38491.html"
    }
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  "related": [
    "CVE-2026-22979",
    "CVE-2026-43499",
    "CVE-2026-46086",
    "CVE-2026-53016",
    "CVE-2026-53166"
  ],
  "summary": "Important: kernel security, bug fix, and enhancement update"
}

CVE-2026-22979 (GCVE-0-2026-22979)

Vulnerability from cvelistv5 – Published: 2026-01-23 15:24 – Updated: 2026-05-23 16:03

Title

net: fix memory leak in skb_segment_list for GRO packets

Summary

In the Linux kernel, the following vulnerability has been resolved: net: fix memory leak in skb_segment_list for GRO packets When skb_segment_list() is called during packet forwarding, it handles packets that were aggregated by the GRO engine. Historically, the segmentation logic in skb_segment_list assumes that individual segments are split from a parent SKB and may need to carry their own socket memory accounting. Accordingly, the code transfers truesize from the parent to the newly created segments. Prior to commit ed4cccef64c1 ("gro: fix ownership transfer"), this truesize subtraction in skb_segment_list() was valid because fragments still carry a reference to the original socket. However, commit ed4cccef64c1 ("gro: fix ownership transfer") changed this behavior by ensuring that fraglist entries are explicitly orphaned (skb->sk = NULL) to prevent illegal orphaning later in the stack. This change meant that the entire socket memory charge remained with the head SKB, but the corresponding accounting logic in skb_segment_list() was never updated. As a result, the current code unconditionally adds each fragment's truesize to delta_truesize and subtracts it from the parent SKB. Since the fragments are no longer charged to the socket, this subtraction results in an effective under-count of memory when the head is freed. This causes sk_wmem_alloc to remain non-zero, preventing socket destruction and leading to a persistent memory leak. The leak can be observed via KMEMLEAK when tearing down the networking environment: unreferenced object 0xffff8881e6eb9100 (size 2048): comm "ping", pid 6720, jiffies 4295492526 backtrace: kmem_cache_alloc_noprof+0x5c6/0x800 sk_prot_alloc+0x5b/0x220 sk_alloc+0x35/0xa00 inet6_create.part.0+0x303/0x10d0 __sock_create+0x248/0x640 __sys_socket+0x11b/0x1d0 Since skb_segment_list() is exclusively used for SKB_GSO_FRAGLIST packets constructed by GRO, the truesize adjustment is removed. The call to skb_release_head_state() must be preserved. As documented in commit cf673ed0e057 ("net: fix fraglist segmentation reference count leak"), it is still required to correctly drop references to SKB extensions that may be overwritten during __copy_skb_header().

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/0b27828ebd1ed3107…
https://git.kernel.org/stable/c/88bea149db2057112…
https://git.kernel.org/stable/c/3264881431e308b9c…
https://git.kernel.org/stable/c/c114a32a2e70b82d4…
https://git.kernel.org/stable/c/238e03d0466239410…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2eeab8c47c3c0276e0746bc382f405c9a236a5ad , < 0b27828ebd1ed3107d7929c3737adbe862e99e74 (git) Affected: fc126c1d51e9552eacd2d717b9ffe9262a8a4cd6 , < 88bea149db2057112af3aaf63534b24fab5858ab (git) Affected: ed4cccef64c1d0d5b91e69f7a8a6697c3a865486 , < 3264881431e308b9c72cb8a0159d57a56d67dd79 (git) Affected: ed4cccef64c1d0d5b91e69f7a8a6697c3a865486 , < c114a32a2e70b82d447f409f7ffcfa3058f9d5bd (git) Affected: ed4cccef64c1d0d5b91e69f7a8a6697c3a865486 , < 238e03d0466239410b72294b79494e43d4fabe77 (git) Affected: d225b0ac96dc40d7e8ae2bc227eb2c56e130975f (git) Affected: 5b3b67f731296027cceb3efad881ae281213f86f (git) Affected: 6.1.85 , < 6.1.161 (semver) Affected: 6.6.26 , < 6.6.121 (semver) Affected: 5.15.154 , < 5.16 (semver) Affected: 6.8.5 , < 6.9 (semver)
Linux	Linux	Affected: 6.9 Unaffected: 0 , < 6.9 (semver) Unaffected: 6.1.161 , ≤ 6.1.* (semver) Unaffected: 6.6.121 , ≤ 6.6.* (semver) Unaffected: 6.12.66 , ≤ 6.12.* (semver) Unaffected: 6.18.6 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

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CVE-2026-43499 (GCVE-0-2026-43499)

Vulnerability from cvelistv5 – Published: 2026-05-21 12:17 – Updated: 2026-07-08 22:22

Title

rtmutex: Use waiter::task instead of current in remove_waiter()

Summary

In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when invoked from futex_requeue(). In the latter case waiter::task is not current, but remove_waiter() operates on current for the dequeue operation. That results in several problems: 1) the rbtree dequeue happens without waiter::task::pi_lock being held 2) the waiter task's pi_blocked_on state is not cleared, which leaves a dangling pointer primed for UAF around. 3) rt_mutex_adjust_prio_chain() operates on the wrong top priority waiter task Use waiter::task instead of current in all related operations in remove_waiter() to cure those problems. [ tglx: Fixup rt_mutex_adjust_prio_chain(), add a comment and amend the changelog ]

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/d8cce4773c2b23d81…
https://git.kernel.org/stable/c/8a1fc8d698ac5e591…
https://git.kernel.org/stable/c/6d52dfcb2a5db86e3…
https://git.kernel.org/stable/c/3fb7394a837740770…
https://git.kernel.org/stable/c/88614876370aac8ad…
https://git.kernel.org/stable/c/3bfdc63936dd47731…
http://www.openwall.com/lists/oss-security/2026/0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < d8cce4773c2b23d819baf5abedc62f7b430e8745 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 8a1fc8d698ac5e5916e3082a0f74450d71f9611f (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 6d52dfcb2a5db86e346cf51f8fcf2071b8085166 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 3fb7394a837740770f0d6b4b30567e60786a63f2 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 88614876370aac8ad1050ad785a4c095ba17ac11 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 3bfdc63936dd4773109b7b8c280c0f3b5ae7d349 (git)
Linux	Linux	Affected: 2.6.39 Unaffected: 0 , < 2.6.39 (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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CVE-2026-46086 (GCVE-0-2026-46086)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:58 – Updated: 2026-06-19 11:59

Title

net: bridge: use a stable FDB dst snapshot in RCU readers

Summary

In the Linux kernel, the following vulnerability has been resolved: net: bridge: use a stable FDB dst snapshot in RCU readers Local FDB entries can be rewritten in place by `fdb_delete_local()`, which updates `f->dst` to another port or to `NULL` while keeping the entry alive. Several bridge RCU readers inspect `f->dst`, including `br_fdb_fillbuf()` through the `brforward_read()` sysfs path. These readers currently load `f->dst` multiple times and can therefore observe inconsistent values across the check and later dereference. In `br_fdb_fillbuf()`, this means a concurrent local-FDB update can change `f->dst` after the NULL check and before the `port_no` dereference, leading to a NULL-ptr-deref. Fix this by taking a single `READ_ONCE()` snapshot of `f->dst` in each affected RCU reader and using that snapshot for the rest of the access sequence. Also publish the in-place `f->dst` updates in `fdb_delete_local()` with `WRITE_ONCE()` so the readers and writer use matching access patterns.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/c502fa9f094cb03d1…
https://git.kernel.org/stable/c/a6ae4511c07b91f59…
https://git.kernel.org/stable/c/1406c4e0ed1eaf8a2…
https://git.kernel.org/stable/c/0b9e4bbfb7c949151…
https://git.kernel.org/stable/c/81af4137a30c4c2dc…
https://git.kernel.org/stable/c/5424e678f9b304e14…
https://git.kernel.org/stable/c/9a2d9d4e657b23dc2…
https://git.kernel.org/stable/c/df4601653201de21b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 960b589f86c74ce582922fcb996103271081f4de , < c502fa9f094cb03d1d1685c71e2105ab359bc2b8 (git) Affected: 960b589f86c74ce582922fcb996103271081f4de , < a6ae4511c07b91f597e461406c6330f0d4ff810e (git) Affected: 960b589f86c74ce582922fcb996103271081f4de , < 1406c4e0ed1eaf8a29801ab1163d00fb7ee4359a (git) Affected: 960b589f86c74ce582922fcb996103271081f4de , < 0b9e4bbfb7c949151e3acd44ed4aa33614d2e110 (git) Affected: 960b589f86c74ce582922fcb996103271081f4de , < 81af4137a30c4c2dc694dea8cacb180bd66000ef (git) Affected: 960b589f86c74ce582922fcb996103271081f4de , < 5424e678f9b304e148cf5dcc047cffc7a56a3bb5 (git) Affected: 960b589f86c74ce582922fcb996103271081f4de , < 9a2d9d4e657b23dc21f24cf139e3aeff0b61341f (git) Affected: 960b589f86c74ce582922fcb996103271081f4de , < df4601653201de21b487c3e7fffd464790cab808 (git)
Linux	Linux	Affected: 3.14 Unaffected: 0 , < 3.14 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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JSON

To clipboard

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: use a stable FDB dst snapshot in RCU readers\n\nLocal FDB entries can be rewritten in place by `fdb_delete_local()`, which\nupdates `f-\u003edst` to another port or to `NULL` while keeping the entry\nalive. Several bridge RCU readers inspect `f-\u003edst`, including\n`br_fdb_fillbuf()` through the `brforward_read()` sysfs path.\n\nThese readers currently load `f-\u003edst` multiple times and can therefore\nobserve inconsistent values across the check and later dereference.\nIn `br_fdb_fillbuf()`, this means a concurrent local-FDB update can change\n`f-\u003edst` after the NULL check and before the `port_no` dereference,\nleading to a NULL-ptr-deref.\n\nFix this by taking a single `READ_ONCE()` snapshot of `f-\u003edst` in each\naffected RCU reader and using that snapshot for the rest of the access\nsequence. Also publish the in-place `f-\u003edst` updates in `fdb_delete_local()`\nwith `WRITE_ONCE()` so the readers and writer use matching access patterns."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-19T11:59:23.674Z",
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          "url": "https://git.kernel.org/stable/c/1406c4e0ed1eaf8a29801ab1163d00fb7ee4359a"
        },
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        },
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          "url": "https://git.kernel.org/stable/c/df4601653201de21b487c3e7fffd464790cab808"
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    "datePublished": "2026-05-27T12:58:28.137Z",
    "dateReserved": "2026-05-13T15:03:33.096Z",
    "dateUpdated": "2026-06-19T11:59:23.674Z",
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CVE-2026-53016 (GCVE-0-2026-53016)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:29 – Updated: 2026-07-07 12:05

Title

crypto: ccp - copy IV using skcipher ivsize

Summary

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - copy IV using skcipher ivsize AF_ALG rfc3686-ctr-aes-ccp requests pass an 8-byte IV to the driver. ccp_aes_complete() restores AES_BLOCK_SIZE bytes into the caller's IV buffer while RFC3686 skciphers expose an 8-byte IV, so the restore overruns the provided buffer. Use crypto_skcipher_ivsize() to copy only the algorithm's IV length.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-805 - Buffer Access with Incorrect Length Value

Assigner

Linux

References

11 references

URL	Tags
https://git.kernel.org/stable/c/939061b2d0f7f1511…
https://git.kernel.org/stable/c/798d409a8949f3f49…
https://git.kernel.org/stable/c/dfb2cf43482981926…
https://git.kernel.org/stable/c/eecee15e263ccb8cd…
https://git.kernel.org/stable/c/bb01d8f1f385bc903…
https://git.kernel.org/stable/c/df9784bb5b637ac80…
https://git.kernel.org/stable/c/227c1e1d9e2aa4cfc…
https://git.kernel.org/stable/c/a7a1f3cdd64d8a165…
https://access.redhat.com/security/cve/CVE-2026-53016	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492269	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

7 products

Vendor	Product	Version
Linux	Linux	Affected: 2b789435d7f36ed918d92db647f3a2f3fec9bb1f , < 939061b2d0f7f15114e34b4ce878ef50ff4089c3 (git) Affected: 2b789435d7f36ed918d92db647f3a2f3fec9bb1f , < 798d409a8949f3f495f238549b86de2886b129bd (git) Affected: 2b789435d7f36ed918d92db647f3a2f3fec9bb1f , < dfb2cf434829819268fe50f41542aad318ad62b2 (git) Affected: 2b789435d7f36ed918d92db647f3a2f3fec9bb1f , < eecee15e263ccb8cd77170a56ab6c969cb54dd6a (git) Affected: 2b789435d7f36ed918d92db647f3a2f3fec9bb1f , < bb01d8f1f385bc9034ca114d3508c7fdea24fc9a (git) Affected: 2b789435d7f36ed918d92db647f3a2f3fec9bb1f , < df9784bb5b637ac80f4a2768a58ca9a50bef28a9 (git) Affected: 2b789435d7f36ed918d92db647f3a2f3fec9bb1f , < 227c1e1d9e2aa4cfc65ba446d5690da1f546cda4 (git) Affected: 2b789435d7f36ed918d92db647f3a2f3fec9bb1f , < a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4 (git)
Linux	Linux	Affected: 3.14 Unaffected: 0 , < 3.14 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7

Show details on NVD website

JSON

To clipboard

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CVE-2026-53166 (GCVE-0-2026-53166)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-07-10 11:57

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "providerMetadata": {
        "dateUpdated": "2026-07-10T11:57:35.720Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "datePublished": "2026-06-25T08:38:46.089Z",
    "dateRejected": "2026-07-10T11:57:35.720Z",
    "dateReserved": "2026-06-09T07:44:35.389Z",
    "dateUpdated": "2026-07-10T11:57:35.720Z",
    "state": "REJECTED"
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}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

alsa-2026:38491

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CVE-2026-43499 (GCVE-0-2026-43499)

CVE-2026-46086 (GCVE-0-2026-46086)

CVE-2026-53016 (GCVE-0-2026-53016)

CVE-2026-53166 (GCVE-0-2026-53166)

Tags

Sightings

Nomenclature