In the Linux kernel, the following vulnerability has been resolved:
fscache: Fix invalidation/lookup race
If an NFS file is opened for writing and closed, fscache_invalidate() will
be asked to invalidate the file - however, if the cookie is in the
LOOKING_UP state (or the CREATING state), then request to invalidate
doesn't get recorded for fscache_cookie_state_machine() to do something
with.
Fix this by making __fscache_invalidate() set a flag if it sees the cookie
is in the LOOKING_UP state to indicate that we need to go to invalidation.
Note that this requires a count on the n_accesses counter for the state
machine, which that will release when it's done.
fscache_cookie_state_machine() then shifts to the INVALIDATING state if it
sees the flag.
Without this, an nfs file can get corrupted if it gets modified locally and
then read locally as the cache contents may not get updated.
References
Configurations
Configuration 1 (hide)
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History
23 Oct 2025, 12:10
Type | Values Removed | Values Added |
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Summary |
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CWE | CWE-362 | |
CPE | cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
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First Time |
Linux
Linux linux Kernel |
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References | () https://git.kernel.org/stable/c/85e4ea1049c70fb99de5c6057e835d151fb647da - Patch | |
References | () https://git.kernel.org/stable/c/b1ae9f617f8a5c848d9205b8e228c6f0d1af754b - Patch | |
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 4.7 |
26 Feb 2025, 07:01
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2025-02-26 07:01
Updated : 2025-10-23 12:10
NVD link : CVE-2022-49655
Mitre link : CVE-2022-49655
CVE.ORG link : CVE-2022-49655
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')