Vulnerability-Lookup

alsa-2026:45192

Vulnerability from osv_almalinux

Published

2026-07-24 00:00

Modified

2026-07-31 12:58

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: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026)
kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059)
kernel: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl() (CVE-2026-52976)
kernel: drm/xe/dma-buf: fix UAF with retry loop (CVE-2026-52950)
kernel: ipv6: fix possible UAF in icmpv6_rcv() (CVE-2026-53006)

Bug Fix(es) and Enhancement(s):

scsi device removal may hang from race with error recovery [almalinux-9.8.z] (JIRA:AlmaLinux-187412)
[AlmaLinux9] kvm fixes for 2026-07-21 [almalinux-9.8.z] (JIRA:AlmaLinux-213468)

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-2026:45192	ADVISORY
	https://access.redhat.com/security/cve/CVE-2025-40026	REPORT
	https://access.redhat.com/security/cve/CVE-2026-52950	REPORT
	https://access.redhat.com/security/cve/CVE-2026-52976	REPORT
	https://access.redhat.com/security/cve/CVE-2026-53006	REPORT
	https://access.redhat.com/security/cve/CVE-2026-53059	REPORT
	https://bugzilla.redhat.com/2406712	REPORT
	https://bugzilla.redhat.com/2492277	REPORT
	https://bugzilla.redhat.com/2492284	REPORT
	https://bugzilla.redhat.com/2492318	REPORT
	https://bugzilla.redhat.com/2492363	REPORT
	https://errata.almalinux.org/9/ALSA-2026-45192.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: KVM: x86: Don\u0027t (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026)\n  * kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059)\n  * kernel: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl() (CVE-2026-52976)\n  * kernel: drm/xe/dma-buf: fix UAF with retry loop (CVE-2026-52950)\n  * kernel: ipv6: fix possible UAF in icmpv6_rcv() (CVE-2026-53006)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * scsi device removal may hang from race with error recovery [almalinux-9.8.z] (JIRA:AlmaLinux-187412)\n  * [AlmaLinux9] kvm fixes for 2026-07-21 [almalinux-9.8.z] (JIRA:AlmaLinux-213468)\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-2026:45192",
  "modified": "2026-07-31T12:58:00Z",
  "published": "2026-07-24T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:45192"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-40026"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-52950"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-52976"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-53006"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-53059"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2406712"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2492277"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2492284"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2492318"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2492363"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-45192.html"
    }
  ],
  "related": [
    "CVE-2025-40026",
    "CVE-2026-53059",
    "CVE-2026-52976",
    "CVE-2026-52950",
    "CVE-2026-53006"
  ],
  "summary": "Important: kernel security, bug fix, and enhancement update"
}

CVE-2025-40026 (GCVE-0-2025-40026)

Vulnerability from cvelistv5 – Published: 2025-10-28 09:32 – Updated: 2026-07-30 05:59

Title

KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O When completing emulation of instruction that generated a userspace exit for I/O, don't recheck L1 intercepts as KVM has already finished that phase of instruction execution, i.e. has already committed to allowing L2 to perform I/O. If L1 (or host userspace) modifies the I/O permission bitmaps during the exit to userspace, KVM will treat the access as being intercepted despite already having emulated the I/O access. Pivot on EMULTYPE_NO_DECODE to detect that KVM is completing emulation. Of the three users of EMULTYPE_NO_DECODE, only complete_emulated_io() (the intended "recipient") can reach the code in question. gp_interception()'s use is mutually exclusive with is_guest_mode(), and complete_emulated_insn_gp() unconditionally pairs EMULTYPE_NO_DECODE with EMULTYPE_SKIP. The bad behavior was detected by a syzkaller program that toggles port I/O interception during the userspace I/O exit, ultimately resulting in a WARN on vcpu->arch.pio.count being non-zero due to KVM no completing emulation of the I/O instruction. WARNING: CPU: 23 PID: 1083 at arch/x86/kvm/x86.c:8039 emulator_pio_in_out+0x154/0x170 [kvm] Modules linked in: kvm_intel kvm irqbypass CPU: 23 UID: 1000 PID: 1083 Comm: repro Not tainted 6.16.0-rc5-c1610d2d66b1-next-vm #74 NONE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 RIP: 0010:emulator_pio_in_out+0x154/0x170 [kvm] PKRU: 55555554 Call Trace: <TASK> kvm_fast_pio+0xd6/0x1d0 [kvm] vmx_handle_exit+0x149/0x610 [kvm_intel] kvm_arch_vcpu_ioctl_run+0xda8/0x1ac0 [kvm] kvm_vcpu_ioctl+0x244/0x8c0 [kvm] __x64_sys_ioctl+0x8a/0xd0 do_syscall_64+0x5d/0xc60 entry_SYSCALL_64_after_hwframe+0x4b/0x53 </TASK>

Severity

7.9 (High)


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

Assigner

Linux

References

9 references

URL	Tags
https://git.kernel.org/stable/c/a908eca437789589d…
https://git.kernel.org/stable/c/00338255bb1f42264…
https://git.kernel.org/stable/c/e0ce3ed1048a47986…
https://git.kernel.org/stable/c/ba35a5d775799ce5a…
https://git.kernel.org/stable/c/3d3abf3f7e8b1abb0…
https://git.kernel.org/stable/c/e7177c7e32cb806f3…
https://git.kernel.org/stable/c/3a062a5c55adc5507…
https://git.kernel.org/stable/c/7366830642505683b…
https://git.kernel.org/stable/c/e750f85391286a4c8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 , < a908eca437789589dd4624da428614c1275064dc (git) Affected: 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 , < 00338255bb1f422642fb2798ebe92e93b6e4209b (git) Affected: 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 , < e0ce3ed1048a47986d15aef1a98ebda25560d257 (git) Affected: 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 , < ba35a5d775799ce5ad60230be97336f2fefd518e (git) Affected: 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 , < 3d3abf3f7e8b1abb082070a343de82d7efc80523 (git) Affected: 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 , < e7177c7e32cb806f348387b7f4faafd4a5b32054 (git) Affected: 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 , < 3a062a5c55adc5507600b9ae6d911e247e2f1d6e (git) Affected: 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 , < 7366830642505683bbe905a2ba5d18d6e4b512b8 (git) Affected: 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 , < e750f85391286a4c8100275516973324b621a269 (git)
Linux	Linux	Affected: 3.0 Unaffected: 0 , < 3.0 (semver) Unaffected: 5.4.301 , ≤ 5.4.* (semver) Unaffected: 5.10.246 , ≤ 5.10.* (semver) Unaffected: 5.15.195 , ≤ 5.15.* (semver) Unaffected: 6.1.157 , ≤ 6.1.* (semver) Unaffected: 6.6.111 , ≤ 6.6.* (semver) Unaffected: 6.12.52 , ≤ 6.12.* (semver) Unaffected: 6.16.12 , ≤ 6.16.* (semver) Unaffected: 6.17.2 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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CVE-2026-52950 (GCVE-0-2026-52950)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:28 – Updated: 2026-07-27 12:05

Title

drm/xe/dma-buf: fix UAF with retry loop

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/xe/dma-buf: fix UAF with retry loop Retry doesn't work here, since bo will be freed on error, leading to UAF. However, now that we do the alloc & init before the attach, we can now combine this as one unit and have the init do the alloc for us. This should make the retry safe. Reported by Sashiko. v2: Fix up the error unwind (CI) (cherry picked from commit 479669418253e0f27f8cf5db01a731352ea592e7)

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-825 - Expired Pointer Dereference

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/39fdac6be02eb7c34…
https://git.kernel.org/stable/c/827062952ed9bdf42…
https://git.kernel.org/stable/c/155a372a1cc50fa93…
https://access.redhat.com/security/cve/CVE-2026-52950	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492318	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:42919	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:45192	vendor-advisoryx_refsource_REDHAT

Impacted products

8 products

Vendor	Product	Version
Linux	Linux	Affected: eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 , < 39fdac6be02eb7c3460518c1c4085f75f935c4ce (git) Affected: eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 , < 827062952ed9bdf4220466c1f05ce452d04bdedf (git) Affected: eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 , < 155a372a1cc50fa93387c5d3cdfd614a61e1afd1 (git)
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (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	Unaffected: 0:6.12.0-211.37.1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-687.30.1.el9_8 , < * (rpm) cpe:/a:redhat: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
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

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CVE-2026-52976 (GCVE-0-2026-52976)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:28 – Updated: 2026-07-27 12:05

Title

drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl() Two error handling issues exist in xe_exec_queue_create_ioctl(): 1. When xe_hw_engine_group_add_exec_queue() fails, the error path jumps to put_exec_queue which skips xe_exec_queue_kill(). If the VM is in preempt fence mode, xe_vm_add_compute_exec_queue() has already added the queue to the VM's compute exec queue list. Skipping the kill leaves the queue on that list, leading to a dangling pointer after the queue is freed. 2. When xa_alloc() fails after xe_hw_engine_group_add_exec_queue() has succeeded, the error path does not call xe_hw_engine_group_del_exec_queue() to remove the queue from the hw engine group list. The queue is then freed while still linked into the hw engine group, causing a use-after-free. Fix both by: - Changing the xe_hw_engine_group_add_exec_queue() failure path to jump to kill_exec_queue so that xe_exec_queue_kill() properly removes the queue from the VM's compute list. - Adding a del_hw_engine_group label before kill_exec_queue for the xa_alloc() failure path, which removes the queue from the hw engine group before proceeding with the rest of the cleanup. (cherry picked from commit 37c831f401746a45d510b312b0ed7a77b1e06ec8)

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-825 - Expired Pointer Dereference

Assigner

Linux

References

9 references

URL	Tags
https://git.kernel.org/stable/c/f93b00161213a0fe9…
https://git.kernel.org/stable/c/753b149d5a433eb19…
https://git.kernel.org/stable/c/1be55646d8a203534…
https://git.kernel.org/stable/c/f3cc22d4df3ed5843…
https://access.redhat.com/security/cve/CVE-2026-52976	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492284	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:42919	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:45192	vendor-advisoryx_refsource_REDHAT

Impacted products

8 products

Vendor	Product	Version
Linux	Linux	Affected: 7970cb36966c9b9183255dc097ae0446300eebcf , < f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43 (git) Affected: 7970cb36966c9b9183255dc097ae0446300eebcf , < 753b149d5a433eb19e0c1b0eb4526a6e26120d1f (git) Affected: 7970cb36966c9b9183255dc097ae0446300eebcf , < 1be55646d8a2035343b012dcb12210db7bb8b056 (git) Affected: 7970cb36966c9b9183255dc097ae0446300eebcf , < f3cc22d4df3ed58439ea7e21daa54c3608e03b78 (git)
Linux	Linux	Affected: 6.12 Unaffected: 0 , < 6.12 (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	Unaffected: 0:6.12.0-211.37.1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-687.30.1.el9_8 , < * (rpm) cpe:/a:redhat: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
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

Show details on NVD website

JSON

To clipboard

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CVE-2026-53006 (GCVE-0-2026-53006)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:29 – Updated: 2026-07-28 12:04

Title

ipv6: fix possible UAF in icmpv6_rcv()

Summary

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in icmpv6_rcv() Caching saddr and daddr before pskb_pull() is problematic since skb->head can change. Remove these temporary variables: - We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr when net_dbg_ratelimited() is called in the slow path. - Avoid potential future misuse after pskb_pull() call.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/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-825 - Expired Pointer Dereference

Assigner

Linux

References

15 references

URL	Tags
https://git.kernel.org/stable/c/7bff2c8fe5c35ae58…
https://git.kernel.org/stable/c/aff0f28f5be803de2…
https://git.kernel.org/stable/c/38bdbc897c0d83a3e…
https://git.kernel.org/stable/c/0069813e6ca9309ec…
https://git.kernel.org/stable/c/1e1f0f89ee4692a64…
https://git.kernel.org/stable/c/7c66b368c6ff453f9…
https://git.kernel.org/stable/c/085e31a811ef234ef…
https://git.kernel.org/stable/c/f996edd7615e686ad…
https://access.redhat.com/security/cve/CVE-2026-53006	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492363	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:47017	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:45192	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47011	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47010	vendor-advisoryx_refsource_REDHAT

Impacted products

9 products

Vendor	Product	Version
Linux	Linux	Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 7bff2c8fe5c35ae58bf73104f53db3676e6e5d94 (git) Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < aff0f28f5be803de2452ce702631c021fcd9ce8a (git) Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 38bdbc897c0d83a3e2b925a51b69420f1feba29a (git) Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 0069813e6ca9309eca78022bcb3aeb1e9ef90a12 (git) Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7 (git) Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 7c66b368c6ff453f99cb39d84af93e908e51eef2 (git) Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 085e31a811ef234ef8c3e219c4636dfebfe7e10f (git) Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < f996edd7615e686ada141b7f3395025729ff8ccb (git)
Linux	Linux	Affected: 4.4 Unaffected: 0 , < 4.4 (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	Unaffected: 0:6.12.0-211.40.1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-553.148.1.rt7.489.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::nfv
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-553.148.1.el8_10 , < * (rpm) cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-687.30.1.el9_8 , < * (rpm) cpe:/a:redhat: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
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

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CVE-2026-53059 (GCVE-0-2026-53059)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:30 – Updated: 2026-07-29 12:04

Title

dm log: fix out-of-bounds write due to region_count overflow

Summary

In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write due to region_count overflow The local variable region_count in create_log_context() is declared as unsigned int (32-bit), but dm_sector_div_up() returns sector_t (64-bit). When a device-mapper target has a sufficiently large ti->len with a small region_size, the division result can exceed UINT_MAX. The truncated value is then used to calculate bitset_size, causing clean_bits, sync_bits, and recovering_bits to be allocated far smaller than needed for the actual number of regions. Subsequent log operations (log_set_bit, log_clear_bit, log_test_bit) use region indices derived from the full untruncated region space, causing out-of-bounds writes to kernel heap memory allocated by vmalloc. This can be reproduced by creating a mirror target whose region_count overflows 32 bits: dmsetup create bigzero --table '0 8589934594 zero' dmsetup create mymirror --table '0 8589934594 mirror \ core 2 2 nosync 2 /dev/mapper/bigzero 0 \ /dev/mapper/bigzero 0' The status output confirms the truncation (sync_count=1 instead of 4294967297, because 0x100000001 was truncated to 1): $ dmsetup status mymirror 0 8589934594 mirror 2 254:1 254:1 1/4294967297 ... This leads to a kernel crash in core_in_sync: BUG: scheduling while atomic: (udev-worker)/9150/0x00000000 RIP: 0010:core_in_sync+0x14/0x30 [dm_log] CR2: 0000000000000008 Fixing recursive fault but reboot is needed! Fix by widening the local region_count to sector_t and adding an explicit overflow check before the value is assigned to lc->region_count.

Severity

6.3 (Medium)


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

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

Linux

References

16 references

URL	Tags
https://git.kernel.org/stable/c/44ab8875ae4a2842b…
https://git.kernel.org/stable/c/defe483e47173768c…
https://git.kernel.org/stable/c/3ec74da927b4e171a…
https://git.kernel.org/stable/c/d4ac87567f86a55c3…
https://git.kernel.org/stable/c/12bd5b88e91a02785…
https://git.kernel.org/stable/c/b455903eed4558982…
https://git.kernel.org/stable/c/4ec8323b9f0764a14…
https://git.kernel.org/stable/c/c20e36b7631d83e75…
https://access.redhat.com/security/cve/CVE-2026-53059	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492277	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:45114	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:45192	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:45115	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47248	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:45116	vendor-advisoryx_refsource_REDHAT

Impacted products

11 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 44ab8875ae4a2842bde2d756bed195d375e0debb (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < defe483e47173768c227532694dc78cb65db5f09 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3ec74da927b4e171a6fc0e77b1188ba4d019af51 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d4ac87567f86a55c3c92e9a5144dcd943a9772a1 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 12bd5b88e91a02785244ff1d20fb157e96e9cdc8 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b455903eed4558982be0811f5b7f44f6bbc4ff57 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4ec8323b9f0764a14d532b1ae9b87f8a9fecb867 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c20e36b7631d83e7535877f08af8b0af72c44b1a (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (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	Unaffected: 0:6.12.0-211.39.1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-553.147.1.rt7.488.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::nfv
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-553.147.1.el8_10 , < * (rpm) cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Unaffected: 0:4.18.0-305.200.1.el8_4 , < * (rpm) cpe:/o:redhat:rhel_aus:8.4
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	Unaffected: 0:4.18.0-305.200.1.el8_4 , < * (rpm) cpe:/o:redhat:rhel_eus_long_life:8.4
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-687.30.1.el9_8 , < * (rpm) cpe:/a:redhat: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
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

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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-2026:45192

Vulnerability from osv_almalinux

CVE-2025-40026 (GCVE-0-2025-40026)

CVE-2026-52950 (GCVE-0-2026-52950)

CVE-2026-52976 (GCVE-0-2026-52976)

CVE-2026-53006 (GCVE-0-2026-53006)

CVE-2026-53059 (GCVE-0-2026-53059)

Tags

Sightings

Nomenclature