CVE-2023-53184
highpriority · track · 31EPSS 0.002 · 6 %ileDEEURUUSEPSS · scored 2026-10-27
In the Linux kernel, the following vulnerability has been resolved: arm64/sme: Set new vector length before reallocating As part of fixing the allocation of the buffer for SVE state when changing SME vector length we introduced an immediate reallocation of the SVE state, this is also done when changing the SVE vector length for consistency. Unfortunately this reallocation is done prior to writing the new vector length to the task struct, meaning the allocation is done with the old vector length and can lead to memory corruption due to an undersized buffer being used. Move the update of the vector length before the allocation to ensure that the new vector length is taken into account. For some reason this isn't triggering any problems when running tests on the arm64 fixes branch (even after repeated tries) but is triggering issues very often after merge into mainline.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.5–7.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (33)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-2053Linux Kernel: Mehrere SchwachstellenDeutsch2025-09-15csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder nicht näher beschriebene Auswirkungen zu erzielen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://git.kernel.org/stable/c/05d881b85b48c7ac6a7c92ce00aa916c4a84d052cnnvd
- https://git.kernel.org/stable/c/356e711640aea6ed145da9407499388b45264cb4cnnvd
- https://git.kernel.org/stable/c/807ada0e4aa3c9090c66009a99fa530c462012c9cnnvd
- https://www.kernel.org/Patchcnnvd
- https://git.kernel.org/stable/c/05d881b85b48c7ac6a7c92ce00aa916c4a84d052enisa_euvd
- https://git.kernel.org/stable/c/356e711640aea6ed145da9407499388b45264cb4enisa_euvd
- https://git.kernel.org/stable/c/807ada0e4aa3c9090c66009a99fa530c462012c9enisa_euvd
- https://git.kernel.org/stable/c/05d881b85b48c7ac6a7c92ce00aa916c4a84d052Patchnvd
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