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Review reviewHigh

CVE-2026-52962

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: ceph: fix a buffer leak in __ceph_setxattr() The old_blob in __ceph_setxattr() can store ci->i_xattrs.prealloc_blob value during the retry. However, it is never called the ceph_buffer_put() for the old_blob object. This patch fixes the issue of the buffer leak.

CVSS
7.8
EPSS
0.14%
3.68% percentile
CISA KEV
Not listed
Published
2026.06.25
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: ceph: fix a buffer leak in __ceph_setxattr() The old_blob in __ceph_setxattr() can store ci->i_xattrs.prealloc_blob value during the retry. However, it is never called the ceph_buffer_put() for the old_blob object. This patch fixes the issue of the buffer leak.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 86968ef21596515958d5f0a40233d02be78ecec0 < 521e5aba857fd267624892c8dd6295f22ce0267e, >= 86968ef21596515958d5f0a40233d02be78ecec0 < d0cb994605c84a159c1d00d72cdc8583c321ef95, >= 86968ef21596515958d5f0a40233d02be78ecec0 < ecf94823c5c6a20790bb76ed2816822b0beb0c22, >= 86968ef21596515958d5f0a40233d02be78ecec0 < 4bfdcefdaa6092a06cacd59389c7756b36e6de8c, >= 86968ef21596515958d5f0a40233d02be78ecec0 < 7d3e8d2d648d5f0df29b4710246680f47695fe94, >= 86968ef21596515958d5f0a40233d02be78ecec0 < 3fa13ceefbc5f36131110342743994cb3de80637, >= 86968ef21596515958d5f0a40233d02be78ecec0 < bc7abce4460e490dcb579eec770f175b150b685f, >= 86968ef21596515958d5f0a40233d02be78ecec0 < 5d3cc36b4e77a27ce7b686b7c59c7072bcb3fa8e, >= 1d86cb8d3204337e1853b84d69ea0f30dc0ba973, >= 9cec64d3f6d91da590cc4069172254067b43d0b2, >= de30fc2ca852365ed635f62d7d818bffc15e55c9, >= dfb8712c7acce0689aed6c400a22b35f4d2861fe, >= f41cd559f1f3412db8e0acdede05ecf990ebfd8a, >= 4.4.192 < 4.5, >= 4.9.192 < 4.10, >= 4.14.143 < 4.15, >= 4.19.72 < 4.20, >= 5.2.14 < 5.3, >= 5.3, >= 5.3.1 < 5.10.258
Fixed versions
4.5, 4.10, 4.15, 4.20, 5.3, 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-787