Answer in brief
CVE-2026-68143 records a Unknown severity vulnerability in net: slip: serialize receive against buffer reallocation. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <eb3836eab47487823f362e6985e170a1e15f20fd || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <44401f7dd9940ced7098930ef64f5a332f279fc2 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5d07b178bef511d69558cfc89fe1129258dc39f8 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0e37bbd6d617eb52bace49390e99eaedc1af73ce || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ee7f9bb9320add61f7b367d7e6cd55e3a3a4d65d | eb3836eab47487823f362e6985e170a1e15f20fd, 44401f7dd9940ced7098930ef64f5a332f279fc2, 5d07b178bef511d69558cfc89fe1129258dc39f8, 0e37bbd6d617eb52bace49390e99eaedc1af73ce, ee7f9bb9320add61f7b367d7e6cd55e3a3a4d65d |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-68143 records a Unknown severity vulnerability in net: slip: serialize receive against buffer reallocation. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <eb3836eab47487823f362e6985e170a1e15f20fd || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <44401f7dd9940ced7098930ef64f5a332f279fc2 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5d07b178bef511d69558cfc89fe1129258dc39f8 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0e37bbd6d617eb52bace49390e99eaedc1af73ce || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ee7f9bb9320add61f7b367d7e6cd55e3a3a4d65d | eb3836eab47487823f362e6985e170a1e15f20fd, 44401f7dd9940ced7098930ef64f5a332f279fc2, 5d07b178bef511d69558cfc89fe1129258dc39f8, 0e37bbd6d617eb52bace49390e99eaedc1af73ce, ee7f9bb9320add61f7b367d7e6cd55e3a3a4d65d |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.