Kernel: use-after-free while changing the mount option in __ext4_remount leading

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Summary

CVECVE-2024-0775
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-01-22 13:15:25 UTC
Updated2026-08-10 22:17:08 UTC
DescriptionA use-after-free flaw was found in the __ext4_remount in fs/ext4/super.c in ext4 in the Linux kernel. This flaw allows a local user to cause an information leak problem while freeing the old quota file names before a potential failure, leading to a use-after-free.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

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

EPSS: 0.002250000 probability, percentile 0.132190000 (date 2026-08-11)

Problem Types: CWE-416 | CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
3.1[email protected]Secondary6.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS6.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel 6.4 rc1 All All
Operating System Redhat Enterprise Linux 9.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Kernel affected 4.14.315 semver Not specified
CNA Linux Kernel affected 4.15 4.19.283 semver Not specified
CNA Linux Kernel affected 4.20 5.4.243 semver Not specified
CNA Linux Kernel affected 5.5 5.10.180 semver Not specified
CNA Linux Kernel affected 5.11 5.15.112 semver Not specified
CNA Linux Kernel affected 5.16 6.1.29 semver Not specified
CNA Linux Kernel affected 6.2 6.2.16 semver Not specified
CNA Linux Kernel affected 6.3 6.3.3 semver Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified

References

ReferenceSourceLinkTags
2259414 – (CVE-2024-0775) CVE-2024-0775 kernel: use-after-free while changing the mount option in __ext4_remount leading af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
ext4: improve error recovery code paths in __ext4_remount() · 4c0b4818b1 - linux-stable - linefinity scm af854a3a-2127-422b-91ae-364da2661108 scm.linefinity.com Patch
cve-details af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2024-01-21T00:00:00.000ZReported to Red Hat.
CNA2023-05-05T00:00:00.000ZMade public.

Workarounds

CNA: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Legacy QID Mappings

  • 161392 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2024-12193)
  • 200199 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6700-1)
  • 200202 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6701-1)
  • 200209 Ubuntu Security Notification for Linux kernel (GCP) Vulnerabilities (USN-6701-2)
  • 200217 Ubuntu Security Notification for Linux kernel (AWS) Vulnerabilities (USN-6700-2)
  • 200222 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6701-3)
  • 200244 Ubuntu Security Notification for Linux kernel (Azure) Vulnerabilities (USN-6701-4)
  • 390295 Oracle VM Server for x86 Security Update for kernel (OVMSA-2024-0003)
  • 755747 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0469-1)
  • 755750 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0476-1)
  • 755751 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0474-1)
  • 755752 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0478-1)
  • 755753 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0484-1)
  • 755754 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0516-1)
  • 755755 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0515-1)
  • 755756 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0514-1)
  • 755765 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0483-1)

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