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Review reviewHigh

CVE-2024-35863

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in is_valid_oplock_break() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.

CVSS
7.8
EPSS
0.66%
48.2% percentile
CISA KEV
Not listed
Published
2024.05.19
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.66%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in is_valid_oplock_break() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 7f48558e6489d032b1584b0cc9ac4bb11072c034 < 494c91e1e9413b407d12166a61b84200d4d54fac, >= 7f48558e6489d032b1584b0cc9ac4bb11072c034 < 0a15ba88a32fa7a516aff7ffd27befed5334dff2, >= 7f48558e6489d032b1584b0cc9ac4bb11072c034 < 16d58c6a7db5050b9638669084b63fc05f951825, >= 7f48558e6489d032b1584b0cc9ac4bb11072c034 < 69ccf040acddf33a3a85ec0f6b45ef84b0f7ec29, >= a67172a013953664b1dad03c648200c70b90506c, >= 3.12.48 < 3.13, >= 3.13, >= 6.0 < 6.1.85, >= 6.2 < 6.6.26, >= 6.7 < 6.8.5, 6.9
Fixed versions
6.1.85, 6.6.26, 6.8.5

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