Bug 2540323 (CVE-2026-93262) - CVE-2026-93262 kernel: md/raid5-ppl: fix use-after-free in ppl_do_flush()
Summary: CVE-2026-93262 kernel: md/raid5-ppl: fix use-after-free in ppl_do_flush()
Keywords:
Status: NEW
Alias: CVE-2026-93262
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 16:20 UTC by OSIDB Bzimport
Modified: 2026-11-12 23:13 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:83157 0 None None None 2026-10-14 21:10:14 UTC
Red Hat Product Errata RHSA-2026:83159 0 None None None 2026-10-14 21:11:49 UTC
Red Hat Product Errata RHSA-2026:90365 0 None None None 2026-10-26 21:02:57 UTC
Red Hat Product Errata RHSA-2026:91565 0 None None None 2026-10-28 03:12:04 UTC
Red Hat Product Errata RHSA-2026:98608 0 None None None 2026-11-11 11:34:30 UTC

Description OSIDB Bzimport 2026-09-24 16:20:47 UTC 
In the Linux kernel, the following vulnerability has been resolved:

md/raid5-ppl: fix use-after-free in ppl_do_flush()

The loop in ppl_do_flush() continues iterating after calling
ppl_io_unit_finished(), touching io->pending_flushes and leading to a
use-after-free.

Add a break statement to stop the loop once io is freed.
Comment 1 gkamathe 2026-09-28 11:10:10 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93262.mbox
Comment 3 Jon Orris 2026-10-14 21:10:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:83157 https://access.redhat.com/errata/RHSA-2026:83157
Comment 4 Jon Orris 2026-10-14 21:11:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:83159 https://access.redhat.com/errata/RHSA-2026:83159
Comment 5 Jon Orris 2026-10-26 21:02:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:90365 https://access.redhat.com/errata/RHSA-2026:90365
Comment 6 Jon Orris 2026-10-28 03:12:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:91565 https://access.redhat.com/errata/RHSA-2026:91565
Comment 7 errata-xmlrpc 2026-11-11 11:34:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:98608 https://access.redhat.com/errata/RHSA-2026:98608
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