CVE-2025-39723 — Out-of-bounds Write in Linux
Severity
7.8HIGHNVD
EPSS
0.0%
top 97.35%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 5
Description
In the Linux kernel, the following vulnerability has been resolved:
netfs: Fix unbuffered write error handling
If all the subrequests in an unbuffered write stream fail, the subrequest
collector doesn't update the stream->transferred value and it retains its
initial LONG_MAX value. Unfortunately, if all active streams fail, then we
take the smallest value of { LONG_MAX, LONG_MAX, ... } as the value to set
in wreq->transferred - which is then returned from ->write_iter().
LONG_MAX was chosen a…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages4 packages
▶CVEListV5linux/linux288ace2f57c9d06dd2e42bd80d03747d879a4068 — f08c80af3c9a9849cd178b4843b7c01d103506a1+3
Patches
🔴Vulnerability Details
2GHSA▶
GHSA-6r55-jr8w-3x3r: In the Linux kernel, the following vulnerability has been resolved:
netfs: Fix unbuffered write error handling
If all the subrequests in an unbuffer↗2025-09-05
OSV▶
CVE-2025-39723: In the Linux kernel, the following vulnerability has been resolved: netfs: Fix unbuffered write error handling If all the subrequests in an unbuffered↗2025-09-05