CVE-2026-43273
MEDIUM SEVERITYCVSS Score & Metrics
Base Score
5.5 / 10
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ceph: supply snapshot context in ceph_zero_partial_object()
The ceph_zero_partial_object function was missing proper snapshot
context for its OSD write operations, which could lead to data
inconsistencies in snapshots.
Reproducer:
../src/vstart.sh --new -x --localhost --bluestore
./bin/ceph auth caps client.fs_a mds 'allow rwps fsname=a' mon 'allow r fsname=a' osd 'allow rw tag cephfs data=a'
mount -t ceph fs_a@.a=/ /mnt/mycephfs/ -o conf=./ceph.conf
dd if=/dev/urandom of=/mnt/mycephfs/foo bs=64K count=1
mkdir /mnt/mycephfs/.snap/snap1
md5sum /mnt/mycephfs/.snap/snap1/foo
fallocate -p -o 0 -l 4096 /mnt/mycephfs/foo
echo 3 > /proc/sys/vm/drop/caches
md5sum /mnt/mycephfs/.snap/snap1/foo # get different md5sum!!
ceph: supply snapshot context in ceph_zero_partial_object()
The ceph_zero_partial_object function was missing proper snapshot
context for its OSD write operations, which could lead to data
inconsistencies in snapshots.
Reproducer:
../src/vstart.sh --new -x --localhost --bluestore
./bin/ceph auth caps client.fs_a mds 'allow rwps fsname=a' mon 'allow r fsname=a' osd 'allow rw tag cephfs data=a'
mount -t ceph fs_a@.a=/ /mnt/mycephfs/ -o conf=./ceph.conf
dd if=/dev/urandom of=/mnt/mycephfs/foo bs=64K count=1
mkdir /mnt/mycephfs/.snap/snap1
md5sum /mnt/mycephfs/.snap/snap1/foo
fallocate -p -o 0 -l 4096 /mnt/mycephfs/foo
echo 3 > /proc/sys/vm/drop/caches
md5sum /mnt/mycephfs/.snap/snap1/foo # get different md5sum!!
Vulnerability Details
Published Date
Last Modified
CWE ID
NVD-CWE-noinfo
Source
NVD
Vendor
Linux
Product
Linux
External References
- https://git.kernel.org/stable/c/36673344b41c31fb502dd0d0113cec1aa96f581e
- https://git.kernel.org/stable/c/4097e70fc543cca72982854108a32f6ae924e727
- https://git.kernel.org/stable/c/531a76c5a2e44264cee8a70121e63eb28c1ba728
- https://git.kernel.org/stable/c/5788b742007f53406049bef917833a71ddd43f60
- https://git.kernel.org/stable/c/69e59a87bab0ea31ab2a584fc65e12dafacf8953
- https://git.kernel.org/stable/c/757873abfc8ea38592582180aed0f57f0f0cb07a
- https://git.kernel.org/stable/c/9efa154609cdb658f51c7d76b30a09f7e6485250
- https://git.kernel.org/stable/c/f16bd3fa74a2084ee7e16a8a2be7e7399b970907
Discussion (0)
Add Comment
No comments yet. Be the first!