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CVE-2023-54072

UnknownEPSS 0.17%

Last modified

CVE-2023-54072 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix potential data race at PCM memory allocation helpers The PCM memory allocation helpers have a sanity check against too many buffer allocations. However, the check is performed without a proper lock and the allocation isn't serialized; this allows user to allocate more memories than predefined max size. Practically seen, this isn't really a big problem, as it's more or less some "soft limit" as a sanity check, and it's not possible to allocate unlimitedly. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix potential data race at PCM memory allocation helpers The PCM memory allocation helpers have a sanity check against too many buffer allocations. However, the check is performed without a proper lock and the allocation isn't serialized; this allows user to allocate more memories than predefined max size. Practically seen, this isn't really a big problem, as it's more or less some "soft limit" as a sanity check, and it's not possible to allocate unlimitedly. But it's still better to address this for more consistent behavior. The patch covers the size check in do_alloc_pages() with the card->memory_mutex, and increases the allocated size there for preventing the further overflow. When the actual allocation fails, the size is decreased accordingly.

Metrics

EPSS Probability
0.17%

6.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 95b30a4312545f2dde9db12bf6a425f35d5a0d77, < 7e1d1456c8db9949459c5a24e8845cfe92430b0f; >= d4cfb30fce03093ad944e0b44bd8f40bdad5330e, < 7e11c58b2620a22c67a5ae28d64ce383890ee9f4; >= d4cfb30fce03093ad944e0b44bd8f40bdad5330e, < a0ab49e7a758b488b2090171a75d50735c0876f6; >= d4cfb30fce03093ad944e0b44bd8f40bdad5330e, < 3eb4e47a94e3f76521d7d344696db61e6a9619c7; >= d4cfb30fce03093ad944e0b44bd8f40bdad5330e, < 773ccad902f67583a58b5650a2f8d8daf2e76fac; >= d4cfb30fce03093ad944e0b44bd8f40bdad5330e, < bd55842ed998a622ba6611fe59b3358c9f76773d
LinuxLinux5.6

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2023-54072?
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix potential data race at PCM memory allocation helpers The PCM memory allocation helpers have a sanity check against too many buffer allocations. However, the check is performed without a proper lock and the allocation isn't serialized; this allows user to allocate more memories than predefined max size. Practically seen, this isn't really a big problem, as it's more or less some "soft limit" as a sanity check, and it's not possible to allocate unlimitedly. But it's still better to address this for more consistent behavior. The patch covers the size check in do_alloc_pages() with the card->memory_mutex, and increases the allocated size there for preventing the further overflow. When the actual allocation fails, the size is decreased accordingly.
How severe is CVE-2023-54072?
Severity scoring for CVE-2023-54072 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2023-54072?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST