CVE-2025-38708 — Use After Free in Linux
Severity
7.8HIGHNVD
EPSS
0.0%
top 94.73%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 4
Latest updateMar 25
Description
In the Linux kernel, the following vulnerability has been resolved:
drbd: add missing kref_get in handle_write_conflicts
With `two-primaries` enabled, DRBD tries to detect "concurrent" writes
and handle write conflicts, so that even if you write to the same sector
simultaneously on both nodes, they end up with the identical data once
the writes are completed.
In handling "superseeded" writes, we forgot a kref_get,
resulting in a premature drbd_destroy_device and use after free,
and further to…
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 Packages3 packages
▶CVEListV5linux/linux668700b40a7c8727bbd2b3fd4fd22e0ce3f1aeb6 — 0336bfe9c237476bd7c45605a36ca79c2bca62e5+9
Also affects: Debian Linux 11.0
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-5jqr-8vwq-w36c: In the Linux kernel, the following vulnerability has been resolved:
drbd: add missing kref_get in handle_write_conflicts
With `two-primaries` enable↗2025-09-05
OSV▶
CVE-2025-38708: In the Linux kernel, the following vulnerability has been resolved: drbd: add missing kref_get in handle_write_conflicts With `two-primaries` enabled,↗2025-09-04