CVE catalog

CVE-2026-43292

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: prevent RCU stalls in kasan_release_vmalloc_node When CONFIG_PAGE_OWNER is enabled, freeing KASAN shadow pages during

[CVE catalog]

Severity: Medium · CVSS 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published: May 8, 2026, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.12% · Oct 25, 2026

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: prevent RCU stalls in kasan_release_vmalloc_node When CONFIG_PAGE_OWNER is enabled, freeing KASAN shadow pages during vmalloc cleanup triggers expensive stack unwinding that acquires RCU read locks. Processing a large purge_list without rescheduling can cause the task to hold CPU for extended periods (10+ seconds), leading to RCU stalls and potential OOM conditions. The issue manifests in purge_vmap_node() -> kasan_release_vmalloc_node() where iterating through hundreds or thousands of vmap_area entries and freeing their associated shadow pages causes: rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6229/1:b..l ... task:kworker/0:17 state:R running task stack:28840 pid:6229 ... kasan_release_vmalloc_node+0x1ba/0xad0 mm/vmalloc.c:2299 purge_vmap_node+0x1ba/0xad0 mm/vmalloc.c:2299 Each call to kasan_release_vmalloc() can free many pages, and with page_owner tracking, each free triggers save_stack() which performs stack unwinding under RCU read lock. Without yielding, this creates an unbounded RCU critical section. Add periodic cond_resched() calls within the loop to allow: - RCU grace periods to complete - Other tasks to run - Scheduler to preempt when needed The fix uses need_resched() for immediate response under load, with a batch count of 32 as a guaranteed upper bound to prevent worst-case stalls even under light load.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	linux	sid	`7.2.12-1`	fixed
Debian	linux	forky	`7.2.12-1`	fixed
Debian	linux	trixie	`6.12.107-1`	fixed
Debian	linux	trixie-security	`6.12.113-1`	fixed
Debian	linux	bookworm	`6.1.176-1`	not affected
Debian	linux	bookworm-security	`6.1.190-1`	not affected
Cpe	linux_kernel	Not reported	`6.12.75`	fixed
Cpe	linux_kernel	Not reported	`6.18.16`	fixed
Cpe	linux_kernel	Not reported	`6.19.6`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	linux	source	sid	`6.19.6-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	forky	`6.19.6-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	trixie	`6.12.85-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Cpe	linux_kernel	cpe	Not reported	`6.12.75`	Not reported	Not reported	Not reported
Cpe	linux_kernel	cpe	Not reported	`6.18.16`	Not reported	Not reported	Not reported
Cpe	linux_kernel	cpe	Not reported	`6.19.6`	Not reported	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[bpftool]Not affected
Source package: [linux]
Details (6)
- 7.1.0+6.1.176-1 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 7.1.0+6.1.176-1 · arm64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 7.5.0+6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 7.5.0+6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 7.1.0+6.1.180-1 · amd64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
- 7.1.0+6.1.180-1 · arm64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
[hyperv-daemons]Not affected
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
[intel-sdsi]Not affected
Source package: [linux]
Details (1)
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
[libcpupower1]Not affected
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
[libcpupower-dev]Not affected
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
[linux-bpf-dev]Not affected
Source package: [linux]
Details (2)
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
[linux-compiler-gcc-12-x86]Not affected
Source package: [linux]
Details (2)
- 6.1.176-1 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
[linux-config-6.1]Not affected
Source package: [linux]
Details (4)
- 6.1.176-1 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
[linux-cpupower]Not affected
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
[linux-doc]Not affected
Source package: [linux]
Details (32)
- 6.1.170-3 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.12.43-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.43-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.57-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.57-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.63-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.63-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.69-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.69-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.73-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.73-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.74-2~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.74-2~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.85-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.85-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.86-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.86-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.88-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.88-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.90-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.90-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.90-2~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.90-2~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.94-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.94-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
[linux-doc-6.1]Not affected
Source package: [linux]
Details (6)
- 6.1.170-3 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Not affected
  nvd · linux · debian · bookworm
[linux-headers-6.1.0-47-amd64]Not affected
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
[linux-headers-6.1.0-47-arm64]Not affected
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
[linux-headers-6.1.0-47-cloud-amd64]Not affected
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
[linux-headers-6.1.0-47-cloud-arm64]Not affected
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
[linux-headers-6.1.0-47-common]Not affected
Source package: [linux]
Details (2)
- 6.1.170-3 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
[linux-headers-6.1.0-47-common-rt]Not affected
Source package: [linux]
Details (2)
- 6.1.170-3 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Not affected
  nvd · linux · debian · bookworm
[linux-headers-6.1.0-47-rt-amd64]Not affected
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
[linux-headers-6.1.0-47-rt-arm64]Not affected
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Not affected
  nvd · linux · debian · bookworm
[linux-headers-6.1.0-50-amd64]Not affected
Source package: [linux]
Details (1)
- 6.1.176-1 · amd64 · bookworm
  Not affected
  nvd · linux · debian · bookworm

Next results

Observed: Oct 27, 2026, 7:37:30 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]