What’s Vulnerable › Vulnerabilities

CVE-2025-37908: mm, slab: clean up slab->obj_exts always

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-20 · updated 2026-07-30
• Weakness: CWE-459

Description

In the Linux kernel, the following vulnerability has been resolved: mm, slab: clean up slab->obj_exts always When memory allocation profiling is disabled at runtime or due to an error, shutdown_mem_profiling() is called: slab->obj_exts which previously allocated remains. It won't be cleared by unaccount_slab() because of mem_alloc_profiling_enabled() not true. It's incorrect, slab->obj_exts should always be cleaned up in unaccount_slab() to avoid following error: [...]BUG: Bad page state in process... .. [...]page dumped because: page still charged to cgroup [andriy.shevchenko@linux.intel.com: fold need_slab_obj_ext() into its only user]

Affected products

• Linux kernel: from 6.10 before 6.12.28; from 6.13 before 6.14.6; 6.15-rc1, 6.15-rc2, 6.15-rc3, 6.15-rc4 — fixed in 6.12.28, 6.14.6

How to fix

Upgrade to a fixed version: Linux kernel 6.12.28, 6.14.6. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/01db0e1a48345aa1937f3bdfc7c7108d03ebcf7e
• https://git.kernel.org/stable/c/be8250786ca94952a19ce87f98ad9906448bc9ef
• https://git.kernel.org/stable/c/dab2a13059a475b6392550f882276e170fe2fcff

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