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Vulnerabilities

Vulnerability · CVE-2025-38029

In the Linux kernel, the following vulnerability has been resolved: kasan: avoid sleepable page allocation from atomic context apply_to_pte_range() enters the lazy MMU…

Published Jun 18, 2025 · catalog updated Oct 21, 2026 · linux kernel

Check if you run it

No confirmed exploitation is on record for CVE-2025-38029. EPSS is 0.16%. Act only if a listed version of linux kernel is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.16%
Remediation
Version ranges on file
Affected products
cpe linux/linux kernel

In the Linux kernel, the following vulnerability has been resolved: kasan: avoid sleepable page allocation from atomic context apply_to_pte_range() enters the lazy MMU mode and then invokes kasan_populate_vmalloc_pte() callback on each page table walk iteration. However, the callback can go into sleep when trying to allocate a single page, e.g. if an architecutre disables preemption on lazy MMU mode enter. On s390 if make arch_enter_lazy_mmu_mode() -> preempt_enable() and arch_leave_lazy_mmu_mode() -> preempt_disable(), such crash occurs: [ 0.663336] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:321 [ 0.663348] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 2, name: kthreadd [ 0.663358] preempt_count: 1, expected: 0 [ 0.663366] RCU nest depth: 0, expected: 0 [ 0.663375] no locks held by kthreadd/2. [ 0.663383] Preemption disabled at: [ 0.663386] [ ] apply_to_pte_range+0xfa/0x4a0 [ 0.663405] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Not tainted 6.15.0-rc5-gcc-kasan-00043-gd76bb1ebb558-dirty #162 PREEMPT [ 0.663408] Hardware name: IBM 3931 A01 701 (KVM/Linux) [ 0.663409] Call Trace: [ 0.663410] [ ] dump_stack_lvl+0xe8/0x140 [ 0.663413] [ ] __might_resched+0x66e/0x700 [ 0.663415] [ ] __alloc_frozen_pages_noprof+0x370/0x4b0 [ 0.663419] [ ] alloc_pages_mpol+0x1a0/0x4a0 [ 0.663421] [ ] alloc_frozen_pages_noprof+0x88/0xc0 [ 0.663424] [ ] alloc_pages_noprof+0x22/0x120 [ 0.663427] [ ] get_free_pages_noprof+0x2c/0xc0 [ 0.663429] [ ] kasan_populate_vmalloc_pte+0x50/0x120 [ 0.663433] [ ] apply_to_pte_range+0x118/0x4a0 [ 0.663435] [ ] apply_to_pmd_range+0x194/0x3e0 [ 0.663437] [ ] __apply_to_page_range+0x2fe/0x7a0 [ 0.663440] [ ] apply_to_page_range+0x28/0x40 [ 0.663442] [ ] kasan_populate_vmalloc+0x82/0xa0 [ 0.663445] [ ] alloc_vmap_area+0x34c/0xc10 [ 0.663448] [ ] __get_vm_area_node+0x186/0x2a0 [ 0.663451] [ ] __vmalloc_node_range_noprof+0x116/0x310 [ 0.663454] [ ] __vmalloc_node_noprof+0xd0/0x110 [ 0.663457] [ ] alloc_thread_stack_node+0xf

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe linux/linux kernel6.15
  • cpe linux/linux kernel< 6.14.9

How to fix CVE-2025-38029

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-38029. EPSS is 0.16%. Act only if a listed version of linux kernel is installed.

Which versions are affected?

Compare what you have installed with linux/linux kernel 6.15; linux/linux kernel < 6.14.9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.16%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 18, 2025 · NIST NVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: kasan: avoid sleepable page allocation from atomic context apply_to_pte_range() enters the lazy MMU mode and then invokes kasan_populate_vmalloc_pte() callback on each page table walk iteration. However, the callback can go into sleep when trying to allocate a single page, e.g. if an architecutre disables preemption on lazy MMU mo

  2. Oct 21, 2026 · NIST NVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: kasan: avoid sleepable page allocation from atomic context apply_to_pte_range() enters the lazy MMU mode and then invokes kasan_populate_vmalloc_pte() callback on each page table walk iteration. However, the callback can go into sleep when trying to allocate a single page, e.g. if an architecutre disables preemption on lazy MMU mo

Sources

  • CVE.orgVulnerability recordCVE-2025-38029

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-38029

    30-day exploitation probability 0.16%

    first.org
  • NIST NVDVulnerability recordCVE-2025-38029

    In the Linux kernel, the following vulnerability has been resolved: kasan: avoid sleepable page allocation from atomic context apply_to_pte_range() enters the lazy MMU mode and then invokes kasan_populate_vmalloc_pte() callback on each page table walk iteration. However, the c

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.