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THREATINT
PUBLISHED

CVE-2024-27389

pstore: inode: Only d_invalidate() is needed



AssignerLinux
Reserved2024-02-25
Published2024-05-01
Updated2024-08-02

Description

In the Linux kernel, the following vulnerability has been resolved: pstore: inode: Only d_invalidate() is needed Unloading a modular pstore backend with records in pstorefs would trigger the dput() double-drop warning: WARNING: CPU: 0 PID: 2569 at fs/dcache.c:762 dput.part.0+0x3f3/0x410 Using the combo of d_drop()/dput() (as mentioned in Documentation/filesystems/vfs.rst) isn't the right approach here, and leads to the reference counting problem seen above. Use d_invalidate() and update the code to not bother checking for error codes that can never happen. ---

Product status

Default status
unaffected

609e28bb139e before db6e5e16f1ee
affected

609e28bb139e before 4cdf9006fc09
affected

609e28bb139e before cb9e802e49c2
affected

609e28bb139e before 340682ed1932
affected

609e28bb139e before a43e0fc5e913
affected

Default status
affected

5.8
affected

Any version before 5.8
unaffected

6.1.83
unaffected

6.6.23
unaffected

6.7.11
unaffected

6.8.2
unaffected

6.9
unaffected

References

https://git.kernel.org/stable/c/db6e5e16f1ee9e3b01d2f71c7f0ba945f4bf0f4e

https://git.kernel.org/stable/c/4cdf9006fc095af71da80e9b5f48a32e991b9ed3

https://git.kernel.org/stable/c/cb9e802e49c24eeb3af35e9e8c04d526f35f112a

https://git.kernel.org/stable/c/340682ed1932b8e3bd0bfc6c31a0c6354eb57cc6

https://git.kernel.org/stable/c/a43e0fc5e9134a46515de2f2f8d4100b74e50de3

cve.org CVE-2024-27389

nvd.nist.gov CVE-2024-27389

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