CVE-2026-46102
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: strparser: fix skb_head leak in strp_abort_strp()
When the stream parser is aborted, for example after a message assembly timeout, it can still hold a reference to a partially assembled message in strp->skb_head.
That skb is not released in strp_abort_strp(), which leaks the partially assembled message and can be triggered repeatedly to exhaust memory.
Fix this by freeing strp->skb_head and resetting the parser state in the abort path. Leave strp_stop() unchanged so final cleanup still happens in strp_done() after the work and timer have been synchronized.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a < d6668ce0e78d23eabecef9a6bc4f0f739cb28ad3 | affected |
| Linux | Linux | 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a < a470ed71c906cc8cbad0d74c9942216698911f8b | affected |
| Linux | Linux | 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a < c2e57695ec9ff9d42f23de70f3805199153d007b | affected |
| Linux | Linux | 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a < e9ae00490d474757c0f9c65073de83e6bb1e5a00 | affected |
| Linux | Linux | 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a < 5327dad2ffe9c1b49881dd6d51ff3c6893847568 | affected |
| Linux | Linux | 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a < 19ca9475f18f991735f98a22e735c43e95e6298d | affected |
| Linux | Linux | 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a < 56082f442023db9be1a5a29d4ee361de4017c0b7 | affected |
| Linux | Linux | 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a < fe72340daaf1af588be88056faf98965f39e6032 | affected |
| Linux | Linux | 4.9 | affected |
| Linux | Linux | 0 < 4.9 | unaffected |
| Linux | Linux | 5.10.258 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.209 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.175 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.140 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.86 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.27 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.4 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/d6668ce0e78d23eabecef9a6bc4f0f739cb28ad3
- https://git.kernel.org/stable/c/a470ed71c906cc8cbad0d74c9942216698911f8b
- https://git.kernel.org/stable/c/c2e57695ec9ff9d42f23de70f3805199153d007b
- https://git.kernel.org/stable/c/e9ae00490d474757c0f9c65073de83e6bb1e5a00
- https://git.kernel.org/stable/c/5327dad2ffe9c1b49881dd6d51ff3c6893847568
- https://git.kernel.org/stable/c/19ca9475f18f991735f98a22e735c43e95e6298d
- https://git.kernel.org/stable/c/56082f442023db9be1a5a29d4ee361de4017c0b7
- https://git.kernel.org/stable/c/fe72340daaf1af588be88056faf98965f39e6032
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