What’s Vulnerable › Vulnerabilities

CVE-2024-36954: tipc: fix a possible memleak in tipc_buf_append

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-30 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: tipc: fix a possible memleak in tipc_buf_append __skb_linearize() doesn't free the skb when it fails, so move '*buf = NULL' after __skb_linearize(), so that the skb can be freed on the err path.

Affected products

• Debian Linux: 10.0
• Linux kernel: from 4.4.271 before 4.5; from 4.9.271 before 4.10; from 4.14.235 before 4.15; from 4.19.193 before 4.19.314; from 5.4.124 before 5.4.276; from 5.10.42 before 5.10.217 — fixed in 4.10, 4.15, 4.19.314, 4.5, 5.10.217, 5.15.159

How to fix

Upgrade to a fixed version: Linux kernel 4.10, 4.15, 4.19.314, 4.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/01cd1b7b685751ee422d00d050292a3d277652d6
• https://git.kernel.org/stable/c/2f87fd9476cf9725d774e6dcb7d17859c6a6d1ae
• https://git.kernel.org/stable/c/3210d34fda4caff212cb53729e6bd46de604d565
• https://git.kernel.org/stable/c/42c8471b0566c7539e7dd584b4d0ebd3cec8cb2c
• https://git.kernel.org/stable/c/614c5a5ae45a921595952117b2e2bd4d4bf9b574
• https://git.kernel.org/stable/c/97bf6f81b29a8efaf5d0983251a7450e5794370d
• https://git.kernel.org/stable/c/adbce6d20da6254c86425a8d4359b221b5ccbccd
• https://git.kernel.org/stable/c/d03a82f4f8144befdc10518e732e2a60b34c870e
• https://git.kernel.org/stable/c/01cd1b7b685751ee422d00d050292a3d277652d6
• https://git.kernel.org/stable/c/2f87fd9476cf9725d774e6dcb7d17859c6a6d1ae
• https://git.kernel.org/stable/c/3210d34fda4caff212cb53729e6bd46de604d565
• https://git.kernel.org/stable/c/42c8471b0566c7539e7dd584b4d0ebd3cec8cb2c

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