CVE-2026-43273

ceph: supply snapshot context in ceph_zero_partial_object()

MEDIUM

5.5

CVSS Score

Published: May 6, 2026 at 11:28 AM UTC

Updated: June 17, 2026 at 10:49 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

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 [email protected]=/ /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!!

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.12 ≤ v < 5.10.2523.12 ≤ v < 5.15.2023.12 ≤ v < 6.1.1653.12 ≤ v < 6.12.753.12 ≤ v < 6.18.163.12 ≤ v < 6.19.63.12 ≤ v < 6.6.1283.12 ≤ v < 7.05.11 ≤ v < 5.15.2025.16 ≤ v < 6.1.1656.13 ≤ v < 6.18.166.19 ≤ v < 6.19.66.2 ≤ v < 6.6.1286.7 ≤ v < 6.12.753.12ad7a60de882aca31afb58721db166f7e77afcd92

Vendor states this is fixed in 36673344b41c31fb502dd0d0113cec1aa96f581e (fixed)

Vendor states this is fixed in 4097e70fc543cca72982854108a32f6ae924e727 (fixed)

Vendor states this is fixed in 531a76c5a2e44264cee8a70121e63eb28c1ba728 (fixed)

Vendor states this is fixed in 5788b742007f53406049bef917833a71ddd43f60 (fixed)

Vendor states this is fixed in 69e59a87bab0ea31ab2a584fc65e12dafacf8953 (fixed)

Vendor states this is fixed in 757873abfc8ea38592582180aed0f57f0f0cb07a (fixed)

Vendor states this is fixed in 9efa154609cdb658f51c7d76b30a09f7e6485250 (fixed)

Vendor states this is fixed in f16bd3fa74a2084ee7e16a8a2be7e7399b970907 (fixed)

Vendor states this is fixed in 3.12 (unaffected)

Vendor states this is fixed in 5.10.252 (unaffected)

Vendor states this is fixed in 5.15.202 (unaffected)

Vendor states this is fixed in 6.1.165 (unaffected)