Review reviewHigh

CVE-2024-26582

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: net: tls: fix use-after-free with partial reads and async decrypt tls_decrypt_sg doesn't take a reference on the pages from clear_skb, so the put_page() in tls_decrypt_done releases them, and we trigger a use-after-free in process_rx_list when we try to read from the partially-read skb.

CVSS
7.8
EPSS
0.71%
50.0% percentile
CISA KEV
Not listed
Published
2024.02.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.71%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: net: tls: fix use-after-free with partial reads and async decrypt tls_decrypt_sg doesn't take a reference on the pages from clear_skb, so the put_page() in tls_decrypt_done releases them, and we trigger a use-after-free in process_rx_list when we try to read from the partially-read skb.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= fd31f3996af2627106e22a9f8072764fede51161 < 20b4ed034872b4d024b26e2bc1092c3f80e5db96, >= fd31f3996af2627106e22a9f8072764fede51161 < d684763534b969cca1022e2a28645c7cc91f7fa5, >= fd31f3996af2627106e22a9f8072764fede51161 < 754c9bab77a1b895b97bd99d754403c505bc79df, >= fd31f3996af2627106e22a9f8072764fede51161 < 32b55c5ff9103b8508c1e04bfa5a08c64e7a925f, >= 6.0, >= 6.0 < 6.1.79, >= 6.2.0 < 6.6.18, >= 6.7.0 < 6.7.6
Fixed versions
6.1.79, 6.6.18, 6.7.6

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