5.5

CVE-2024-42075

bpf: Fix remap of arena.

In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix remap of arena.

The bpf arena logic didn't account for mremap operation. Add a refcnt for
multiple mmap events to prevent use-after-free in arena_vm_close.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 6.9
Linux ≫ Linux Kernel Version >= 6.9.1 < 6.9.8
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.21% 0.111
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/87496a1b01e8e2e399428c0db25e106f7961d01e
Patch
https://git.kernel.org/stable/c/b90d77e5fd784ada62ddd714d15ee2400c28e1cf
Patch