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CVE-2026-23201: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    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 "[email protected]=/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.

    Засегнати продукти

    • Linux Linux: 4b9aee707c4580511983a0998547f3b28514e6a6 преди c9a129c82ddf82a50b4f8960d2609714ca2dbd26; bb80f7618832d26f7e395f52f82b1dac76223e5f преди 8c9af7339de419819cfc641d551675d38ff99abf; 101841c38346f4ca41dc1802c867da990ffb32eb преди e258ed369c9e04caa7d2fd49785d753ae4034cb6; 101841c38346f4ca41dc1802c867da990ffb32eb преди bc8dedae022ce3058659c3addef3ec4b41d15e00; 3145b2b11492d61c512bbc59660bb823bc757f48; 493479af8af3ab907f49e99323777d498a4fbd2b; 6.12.42 преди 6.12.70; 6.15.10 преди 6.16; 6.16.1 преди 6.17
    • Linux Linux: 6.17; преди 6.17; 6.12.70 до 6.12.*; 6.18.10 до 6.18.*; от 6.19 нататък

    История

    • 14 февруари 2026 Публикувано

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    Първоизточници

    CVE-2026-23201: Linux | freedomonline.bg