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Review reviewHigh

CVE-2024-26736

Linux Linux, linux kernel, debian linux

In the Linux kernel, the following vulnerability has been resolved: afs: Increase buffer size in afs_update_volume_status() The max length of volume->vid value is 20 characters. So increase idbuf[] size up to 24 to avoid overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE. [DH: Actually, it's 20 + NUL, so increase it to 24 and use snprintf()]

CVSS
7.8
EPSS
0.72%
50.5% percentile
CISA KEV
Not listed
Published
2024.04.04
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.72%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: afs: Increase buffer size in afs_update_volume_status() The max length of volume->vid value is 20 characters. So increase idbuf[] size up to 24 to avoid overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE. [DH: Actually, it's 20 + NUL, so increase it to 24 and use snprintf()]

Affected product and versions

Product
Linux Linux, linux kernel, debian linux
Affected versions
>= d2ddc776a4581d900fc3bdc7803b403daae64d88 < 5c27d85a69fa16a08813ba37ddfb4bbc9a1ed6b5, >= d2ddc776a4581d900fc3bdc7803b403daae64d88 < d9b5e2b7a8196850383c70d099bfd39e81ab6637, >= d2ddc776a4581d900fc3bdc7803b403daae64d88 < e56662160fc24d28cb75ac095cc6415ae1bda43e, >= d2ddc776a4581d900fc3bdc7803b403daae64d88 < e8530b170e464017203e3b8c6c49af6e916aece1, >= d2ddc776a4581d900fc3bdc7803b403daae64d88 < 6e6065dd25b661420fac19c34282b6c626fcd35e, >= d2ddc776a4581d900fc3bdc7803b403daae64d88 < d34a5e57632bb5ff825196ddd9a48ca403626dfa, >= d2ddc776a4581d900fc3bdc7803b403daae64d88 < 6ea38e2aeb72349cad50e38899b0ba6fbcb2af3d, >= 4.15, >= 4.15 < 5.4.270, >= 5.5 < 5.10.211, >= 5.11 < 5.15.150, >= 5.16 < 6.1.80, >= 6.2 < 6.6.19, >= 6.7 < 6.7.7, 6.8, 10.0
Fixed versions
5.4.270, 5.10.211, 5.15.150, 6.1.80, 6.6.19, 6.7.7

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel, debian linux 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-787
CVE-2024-26736 — Linux Linux, linux kernel, debian linux | SECUFOCUS NOW