CVE-2026-68143
CVE CVE-2026-68143EUVD EUVD-2026-55526Published 2026-08-10T11:59:07.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: net: slip: serialize receive against buffer reallocation sl_realloc_bufs() replaces rbuff and updates buffsize while holding sl->lock. slip_receive_buf() reads those fields and writes through rbuff without holding the lock. An MTU change can therefore race with receive processing. An MTU shrink can expose the new smaller rbuff with the old larger bound, causing an out-of-bounds write. A receive callback which already loaded the old rbuff can instead continue writing after that buffer has been freed. Serialize receive processing with sl_realloc_bufs() by holding sl->lock while consuming each receive batch.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.1.6; patch: 0; patch: 6.6.148; 2.6.12; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <44401f7dd9940ced7098930ef64f5a332f279fc2; patch: 6.18.42; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ee7f9bb9320add61f7b367d7e6cd55e3a3a4d65d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <eb3836eab47487823f362e6985e170a1e15f20fd; patch: 6.12.101; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0e37bbd6d617eb52bace49390e99eaedc1af73ce; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5d07b178bef511d69558cfc89fe1129258dc39f8; patch: 7.2-rc5
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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