---
id: CVE-2026-43273
title: 'ceph: supply snapshot context in ceph_zero_partial_object()'
summary: |-
  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, whi…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 <
    36673344b41c31fb502dd0d0113cec1aa96f581e
  - >-
    Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 <
    5788b742007f53406049bef917833a71ddd43f60
  - >-
    Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 <
    757873abfc8ea38592582180aed0f57f0f0cb07a
  - >-
    Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 <
    9efa154609cdb658f51c7d76b30a09f7e6485250
  - >-
    Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 <
    531a76c5a2e44264cee8a70121e63eb28c1ba728
  - >-
    Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 <
    69e59a87bab0ea31ab2a584fc65e12dafacf8953
  - >-
    Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 <
    4097e70fc543cca72982854108a32f6ae924e727
  - >-
    Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 <
    f16bd3fa74a2084ee7e16a8a2be7e7399b970907
  - Linux 3.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T15:32:59.434530Z'
published: '2026-05-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T15:42:46.088Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43273'
references:
  - url: 'https://git.kernel.org/stable/c/36673344b41c31fb502dd0d0113cec1aa96f581e'
  - url: 'https://git.kernel.org/stable/c/5788b742007f53406049bef917833a71ddd43f60'
  - url: 'https://git.kernel.org/stable/c/757873abfc8ea38592582180aed0f57f0f0cb07a'
  - url: 'https://git.kernel.org/stable/c/9efa154609cdb658f51c7d76b30a09f7e6485250'
  - url: 'https://git.kernel.org/stable/c/531a76c5a2e44264cee8a70121e63eb28c1ba728'
  - url: 'https://git.kernel.org/stable/c/69e59a87bab0ea31ab2a584fc65e12dafacf8953'
  - url: 'https://git.kernel.org/stable/c/4097e70fc543cca72982854108a32f6ae924e727'
  - url: 'https://git.kernel.org/stable/c/f16bd3fa74a2084ee7e16a8a2be7e7399b970907'
tags:
  - cve.org
epss: 0.00117
epssPercentile: 0.01667
ingestedAt: '2026-11-06T15:54:03.955Z'
---

## Overview

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!!

## Affected

- `Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 < 36673344b41c31fb502dd0d0113cec1aa96f581e`
- `Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 < 5788b742007f53406049bef917833a71ddd43f60`
- `Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 < 757873abfc8ea38592582180aed0f57f0f0cb07a`
- `Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 < 9efa154609cdb658f51c7d76b30a09f7e6485250`
- `Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 < 531a76c5a2e44264cee8a70121e63eb28c1ba728`
- `Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 < 69e59a87bab0ea31ab2a584fc65e12dafacf8953`
- `Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 < 4097e70fc543cca72982854108a32f6ae924e727`
- `Linux >= ad7a60de882aca31afb58721db166f7e77afcd92 < f16bd3fa74a2084ee7e16a8a2be7e7399b970907`
- `Linux 3.12`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.