5.5

CVE-2024-57927

nfs: Fix oops in nfs_netfs_init_request() when copying to cache

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

nfs: Fix oops in nfs_netfs_init_request() when copying to cache

When netfslib wants to copy some data that has just been read on behalf of
nfs, it creates a new write request and calls nfs_netfs_init_request() to
initialise it, but with a NULL file pointer.  This causes
nfs_file_open_context() to oops - however, we don't actually need the nfs
context as we're only going to write to the cache.

Fix this by just returning if we aren't given a file pointer and emit a
warning if the request was for something other than copy-to-cache.

Further, fix nfs_netfs_free_request() so that it doesn't try to free the
context if the pointer is NULL.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.12 < 6.12.10
Linux ≫ Linux Kernel Version 6.13 Update rc1
Linux ≫ Linux Kernel Version 6.13 Update rc2
Linux ≫ Linux Kernel Version 6.13 Update rc3
Linux ≫ Linux Kernel Version 6.13 Update rc4
Linux ≫ Linux Kernel Version 6.13 Update rc5
Linux ≫ Linux Kernel Version 6.13 Update rc6
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.07
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-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/13a07cc81e2d116cece727a83746c74b87a9d417
Patch
https://git.kernel.org/stable/c/86ad1a58f6a9453f49e06ef957a40a8dac00a13f
Patch