CVE-2026-23201
Medium · 5.5CVSS
5.5
EPSS
0.1%
Published
Feb 14, 2026
CISA due date
—
The record
In the Linux kernel, the following vulnerability has been resolved: ceph: fix oops due to invalid pointer for kfree() in parse_longname() This fixes a kernel oops when reading ceph snapshot directories (.snap), for example by simply running `ls /mnt/my_ceph/.snap`. The variable str is guarded by __free(kfree), but advanced by one for skipping the initial '_' in snapshot names. Thus, kfree() is called with an invalid pointer. This patch removes the need for advancing the pointer so kfree() is called with correct memory pointer. Steps to reproduce: 1. Create snapshots on a cephfs volume (I've 63 snaps in my testcase) 2. Add cephfs mount to fstab $ echo "samba-fileserver@.files=/volumes/datapool/stuff/3461082b-ecc9-4e82-8549-3fd2590d3fb6 /mnt/test/stuff ceph acl,noatime,_netdev 0 0" >> /etc/fstab 3. Reboot the system $ systemctl reboot 4. Check if it's really mounted $ mount | grep stuff 5. List snapshots (expected 63 snapshots on my system) $ ls /mnt/test/stuff/.snap Now ls hangs forever and the kernel log shows the oops.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Linux | Kernel | 0 | 6.12.70 |
| openSUSE:Leap 16.0 | dtb-aarch64 | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-64kb | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-azure | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-default | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-default-base | 0 | 6.12.0-160000.27.1.160000.2.8 |
| openSUSE:Leap 16.0 | kernel-docs | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-kvmsmall | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-obs-build | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-obs-qa | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-rt | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-source | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-syms | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-zfcpdump | 0 | 6.12.0-160000.28.1 |
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