CVE-2025-37879
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
9p/net: fix improper handling of bogus negative read/write replies
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)
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 070b3656cf228eaaef7b28b59264c5c7cdbdd0fb | affected | git | 468ff4a7c61fb811c596a7c44b6a5455e40fd12b | Unavailable | None listed |
| 070b3656cf228eaaef7b28b59264c5c7cdbdd0fb | affected | git | a68768e280b7d0c967ea509e791bb9b90adc94a5 | Unavailable | None listed |
| 070b3656cf228eaaef7b28b59264c5c7cdbdd0fb | affected | git | c548f95688e2b5ae0e2ae43d53cf717156c7d034 | Unavailable | None listed |
| 070b3656cf228eaaef7b28b59264c5c7cdbdd0fb | affected | git | 374e4cd75617c8c2552f562f39dd989583f5c330 | Unavailable | None listed |
| 070b3656cf228eaaef7b28b59264c5c7cdbdd0fb | affected | git | d0259a856afca31d699b706ed5e2adf11086c73b | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.1 | Unavailable | None listed |
| 6.1.136 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.89 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.26 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.14.5 | unaffected | semver | Unavailable | 6.14.* | None listed |
| 6.15 | unaffected | original_commit_for_fix | Unavailable | * | None listed |