CVE - CVE-2025-37879

CVE-ID
CVE-2025-37879	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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)
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/374e4cd75617c8c2552f562f39dd989583f5c330 URL:https://git.kernel.org/stable/c/374e4cd75617c8c2552f562f39dd989583f5c330 MISC:https://git.kernel.org/stable/c/468ff4a7c61fb811c596a7c44b6a5455e40fd12b URL:https://git.kernel.org/stable/c/468ff4a7c61fb811c596a7c44b6a5455e40fd12b MISC:https://git.kernel.org/stable/c/a68768e280b7d0c967ea509e791bb9b90adc94a5 URL:https://git.kernel.org/stable/c/a68768e280b7d0c967ea509e791bb9b90adc94a5 MISC:https://git.kernel.org/stable/c/c548f95688e2b5ae0e2ae43d53cf717156c7d034 URL:https://git.kernel.org/stable/c/c548f95688e2b5ae0e2ae43d53cf717156c7d034 MISC:https://git.kernel.org/stable/c/d0259a856afca31d699b706ed5e2adf11086c73b URL:https://git.kernel.org/stable/c/d0259a856afca31d699b706ed5e2adf11086c73b
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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