CVE-2025-38058 | Teknoloji dünyasından en güncel haberleri ve güvenlikle ilgili gelişmeleri takip edin.

In the Linux kernel, the following vulnerability has been resolved: __legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock ... or we risk st…
Medium CVSS: 5.5

CVE-2025-38058

In the Linux kernel, the following vulnerability has been resolved:

__legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock

... or we risk stealing final mntput from sync umount - raising mnt_count
after umount(2) has verified that victim is not busy, but before it
has set MNT_SYNC_UMOUNT; in that case __legitimize_mnt() doesn't see
that it's safe to quietly undo mnt_count increment and leaves dropping
the reference to caller, where it'll be a full-blown mntput().

Check under mount_lock is needed; leaving the current one done before
taking that makes no sense - it's nowhere near common enough to bother
with.
Vendor
Linux
Product
Linux Kernel
CWE
CWE-667
Yayın Tarihi
2025-06-18 10:15:38
Güncelleme
2025-12-18 21:32:24
Source Identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
KEV Date Added
-

Kategoriler

CWE-667 Linux Kernel MEDIUM Linux 2025

Referanslar

https://git.kernel.org/stable/c/250cf3693060a5f803c5f1ddc082bb06b16112a9 https://git.kernel.org/stable/c/628fb00195ce21a90cf9e4e3d105cd9e58f77b40 https://git.kernel.org/stable/c/8cafd7266fa02e0863bacbf872fe635c0b9725eb https://git.kernel.org/stable/c/9b0915e72b3cf52474dcee0b24a2f99d93e604a3 https://git.kernel.org/stable/c/b55996939c71a3e1a38f3cdc6a8859797efc9083 https://git.kernel.org/stable/c/b89eb56a378b7b2c1176787fc228d0a57172bdd5 https://git.kernel.org/stable/c/d8ece4ced3b051e656c77180df2e69e19e24edc1 https://git.kernel.org/stable/c/f6d45fd92f62845cbd1eb5128fd8f0ed7d0c5a42 https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html