Tracker / CVE-2025-37879
CVE-2025-37879
Critical 9.8
In the Linux kernel, the following vulnerability has been resolved: 9p/net: fix improper handling of bogus negative read/write replies In p9_client_write() and p9_client_read_once(), if the server incorrectly replies with success but a negative write/read count then we would consider written (negative) <= rsize (positive) because both variables were signed. Make variables unsigned to avoid this problem. The reproducer linked below now fails with the following error instead of a null pointer deref: 9pnet: bogus RWRITE count (4294967295 > 3)
Affected products and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel · … → 6.1.136 |
| linux | linux_kernel · 6.13 → 6.14.5 |
| linux | linux_kernel · 6.2 → 6.6.89 |
| linux | linux_kernel · 6.7 → 6.12.26 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.