Review reviewHigh

CVE-2024-56626

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write An offset from client could be a negative value, It could allows to write data outside the bounds of the allocated buffer. Note that this issue is coming when setting 'vfs objects = streams_xattr parameter' in ksmbd.conf.

CVSS: 7.8
EPSS: -
CISA KEV: Not listed
Published: 2024.12.28

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

Affected product and versions

Product: Linux Linux, linux kernel
Affected versions: >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 1aea5c9470be2c7129704fb1b9562b1e3e0576f8, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 8cd7490fc0f268883e86e840cda5311257af69ca, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 164d3597d26d9acff5d5b8bc3208bdcca942dd6a, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < c5797f195c67132d061d29c57a7c6d30530686f0, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 313dab082289e460391c82d855430ec8a28ddf81, >= 5.15, >= 5.15 < 5.15.176, >= 5.16 < 6.1.120, >= 6.2 < 6.6.66, >= 6.7 < 6.12.5, 6.13
Fixed versions: 5.15.176, 6.1.120, 6.6.66, 6.12.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux Linux, linux kernel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
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