01 Record

CVE-2024-26800

tls: fix use-after-free on failed backlog decryption

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

tls: fix use-after-free on failed backlog decryption

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.74% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 54.5% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-04-04 08:20Z2 YR AGO

Last updated

2026-08-05 11:27Z2 MO AGO

Reserved

2024-02-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant
CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

4400e9443d1eaeca8e331eb7fec33bf4375f2a691b325500997587cbc2c2d10c

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxcd1bbca03f3c1d845ce274c0d0a66de8e5929f72 to < f2b85a4cc763841843de693bbd7308fe9a2c4c89, 13eca403876bbea3716e82cdfe6f1e6febb38754 to < 81be85353b0f5a7b660635634b655329b429eefe, ab6397f072e5097f267abf5cb08a8004e6b17694 to < 1ac9fb84bc7ecd4bc6428118301d9d864d2a58d1, 8590541473188741055d27b955db0777569438e3 to < 13114dc5543069f7b97991e3b79937b6da05f5b0, 3ade391adc584f17b5570fd205de3ad029090368, 5.15.160 to < 5.16, 6.6.18 to < 6.6.21, 6.7.6 to < 6.7.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/f2b85a4cc763841843de693bbd7308fe9a2c4c89
git.kernel.orghttps://git.kernel.org/stable/c/81be85353b0f5a7b660635634b655329b429eefe
git.kernel.orghttps://git.kernel.org/stable/c/1ac9fb84bc7ecd4bc6428118301d9d864d2a58d1
git.kernel.orghttps://git.kernel.org/stable/c/13114dc5543069f7b97991e3b79937b6da05f5b0

07 Fixed in

Debian 12

linux
Fixed in 6.1.85-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.7.9-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.7.9-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.