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CVE-2026-63800
9.8 CRITICAL
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): High (H)
- Modified Availability (MA): High (H)
Activity log
- Created & dismissed (max. allowed matches exceeded) suggestion
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).
References
Affected products
Linux
- =<7.1.*
- =<6.1.*
- <7e37e9b3e82ade881e1798e2f4fcc54aff7793c1
- =<5.15.*
- =<5.10.*
- <5.11
- ==5.11
- <1f24b8302c77dcaf79c64c073877a3b9f4dd25d2
- <5.10.260
- ==aa2399f55eff4ec78330bb6fe55f9df53e5cae0c
- <9645aaf689aff57427ece3b9fa47d5b5399417f4
- <4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98
- =<6.6.*
- <5.5
- <2883ddd7542b4437a2ab4908fe2773f690e20889
- =<6.18.*
- <13e198a90ca4050f4bee8a3f23680389a6563ccc
- =<6.12.*
- =<*
- <9c0fb5c09ae5bd68dc0038692af8127029cb0385
- <200e7637f4d6a1342987045eea72641524f909dc