CVE-2026-43043
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-05-01
Modified: 2026-11-11
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: af-alg - fix NULL pointer dereference in scatterwalk The AF_ALG interface fails to unmark the end of a Scatter/Gather List (SGL) when chaining a new af_alg_tsgl structure. If a sendmsg() fills an SGL exactly to MAX_SGL_ENTS, the last entry is marked as the end. A subsequent sendmsg() allocates a new SGL and chains it, but fails to clear the end marker on the previous SGL's last data entry. This causes the crypto scatterwalk to hit a premature end, returning NULL on sg_next() and leading to a kernel panic during dereference. Fix this by explicitly unmarking the end of the previous SGL when performing sg_chain() in af_alg_alloc_tsgl().
Weakness Classification (1)
Affected Software (16)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < f48d3dd99199180cf37d6253550c55e86372309a |
| Linux | Linux | 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < f9acceae7b004956851fd4268edf9f518a9bce04 |
| Linux | Linux | 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 7195350fb78538c25cd790d703f8f2c73ee0d395 |
| Linux | Linux | 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 7cdf2c6381b21ab5ccf8116750d5582fcd6c0f49 |
| Linux | Linux | 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 44eafa39363e8d5dfda6a8c6eb6b45458ed4b948 |
| Linux | Linux | 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 00cbdec17c15d024a1c5002c7365df7624a18a75 |
| Linux | Linux | 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 4b03ab0a587ec57eb7ddb5c115d84a42896f60f7 |
| Linux | Linux | 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 < 62397b493e14107ae82d8b80938f293d95425bcb |
| Linux | Linux | 2.6.38 |
| linux | linux_kernel | 2.6.38 – 5.10.253 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |