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Review reviewHigh

CVE-2024-46796

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double put of @cfile in smb2_set_path_size() If smb2_compound_op() is called with a valid @cfile and returned -EINVAL, we need to call cifs_get_writable_path() before retrying it as the reference of @cfile was already dropped by previous call. This fixes the following KASAN splat when running fstests generic/013 against Windows Server 2022: CIFS: Attempting to mount //w22-fs0/scratch run fstests generic/013 at 2024-09-02 19:48:59 ================================================================== BUG: KASAN:...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.09.18
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double put of @cfile in smb2_set_path_size() If smb2_compound_op() is called with a valid @cfile and returned -EINVAL, we need to call cifs_get_writable_path() before retrying it as the reference of @cfile was already dropped by previous call. This fixes the following KASAN splat when running fstests generic/013 against Windows Server 2022: CIFS: Attempting to mount //w22-fs0/scratch run fstests generic/013 at 2024-09-02 19:48:59 ================================================================== BUG: KASAN:...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 1e60bc0e954389af82f1d9a85f13a63f6572350f < 5a72d1edb0843e4c927a4096f81e631031c25c28, >= 71f15c90e785d1de4bcd65a279e7256684c25c0d < 762099898309218b4a7954f3d49e985dc4dfd638, >= 71f15c90e785d1de4bcd65a279e7256684c25c0d < f9c169b51b6ce20394594ef674d6b10efba31220, >= 6.6.32 < 6.6.51, >= 6.9, >= 6.9 < 6.10.10, 6.11
Fixed versions
6.6.51, 6.10.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416