9.8

CVE-2026-63800

pNFS: Fix use-after-free in pnfs_update_layout()

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

pNFS: Fix use-after-free in pnfs_update_layout()

When hitting the NFS_LAYOUT_RETURN branch in pnfs_update_layout(),
the code calls pnfs_prepare_to_retry_layoutget(lo). If it succeeds,
pnfs_put_layout_hdr(lo) is called before trace_pnfs_update_layout(),
which still references 'lo'. This results in a use-after-free when the
tracepoint accesses lo's fields.

Fix this by moving the tracepoint call before pnfs_put_layout_hdr(lo).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.4.91 < 5.5
Linux ≫ Linux Kernel Version >= 5.10.9 < 5.10.260
Linux ≫ Linux Kernel Version >= 5.11.1 < 5.15.211
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.177
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.144
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.95
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.38
Linux ≫ Linux Kernel Version >= 6.19 < 7.1.3
Linux ≫ Linux Kernel Version5.11 Update-
Linux ≫ Linux Kernel Version5.11 Updaterc4
Linux ≫ Linux Kernel Version5.11 Updaterc5
Linux ≫ Linux Kernel Version5.11 Updaterc6
Linux ≫ Linux Kernel Version5.11 Updaterc7
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.5% 0.396
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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/4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98
Patch
https://git.kernel.org/stable/c/1f24b8302c77dcaf79c64c073877a3b9f4dd25d2
Patch
https://git.kernel.org/stable/c/9c0fb5c09ae5bd68dc0038692af8127029cb0385
Patch
https://git.kernel.org/stable/c/7e37e9b3e82ade881e1798e2f4fcc54aff7793c1
Patch
https://git.kernel.org/stable/c/2883ddd7542b4437a2ab4908fe2773f690e20889
Patch
https://git.kernel.org/stable/c/200e7637f4d6a1342987045eea72641524f909dc
Patch
https://git.kernel.org/stable/c/9645aaf689aff57427ece3b9fa47d5b5399417f4
Patch
https://git.kernel.org/stable/c/13e198a90ca4050f4bee8a3f23680389a6563ccc
Patch