5.5

CVE-2025-22000

mm/huge_memory: drop beyond-EOF folios with the right number of refs

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

mm/huge_memory: drop beyond-EOF folios with the right number of refs

When an after-split folio is large and needs to be dropped due to EOF,
folio_put_refs(folio, folio_nr_pages(folio)) should be used to drop all
page cache refs.  Otherwise, the folio will not be freed, causing memory
leak.

This leak would happen on a filesystem with blocksize > page_size and a
truncate is performed, where the blocksize makes folios split to >0 order
ones, causing truncated folios not being freed.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.9 < 6.12.21
Linux ≫ Linux Kernel Version >= 6.13 < 6.13.9
Linux ≫ Linux Kernel Version 6.14 Update rc1
Linux ≫ Linux Kernel Version 6.14 Update rc2
Linux ≫ Linux Kernel Version 6.14 Update rc3
Linux ≫ Linux Kernel Version 6.14 Update rc4
Linux ≫ Linux Kernel Version 6.14 Update rc5
Linux ≫ Linux Kernel Version 6.14 Update rc6
Linux ≫ Linux Kernel Version 6.14 Update rc7
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.075
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
CISA-ADP 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-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

https://git.kernel.org/stable/c/14efb4793519d73fb2902bb0ece319b886e4b4b9
Patch
https://git.kernel.org/stable/c/86368616a9ce51f6b41efa251b6e066893851d67
Patch
https://git.kernel.org/stable/c/92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e
Patch