quota: Fix potential NULL pointer dereference

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-26878
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-04-17 11:15:09 UTC
Updated2026-05-12 12:16:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: quota: Fix potential NULL pointer dereference Below race may cause NULL pointer dereference P1 P2 dquot_free_inode quota_off drop_dquot_ref remove_dquot_ref dquots = i_dquot(inode) dquots = i_dquot(inode) srcu_read_lock dquots[cnt]) != NULL (1) dquots[type] = NULL (2) spin_lock(&dquots[cnt]->dq_dqb_lock) (3) .... If dquot_free_inode(or other routines) checks inode's quota pointers (1) before quota_off sets it to NULL(2) and use it (3) after that, NULL pointer dereference will be triggered. So let's fix it by using a temporary pointer to avoid this issue.

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from [email protected]

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

Problem Types: CWE-362 | CWE-476

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac 8514899c1a4edf802f03c408db901063aa3f05a1 git Not specified
CNA Linux Linux affected 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac 49669f8e7eb053f91d239df7b1bfb4500255a9d0 git Not specified
CNA Linux Linux affected 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac 61380537aa6dd32d8a723d98b8f1bd1b11d8fee0 git Not specified
CNA Linux Linux affected 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac 1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25 git Not specified
CNA Linux Linux affected 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac 7f9e833fc0f9b47be503af012eb5903086939754 git Not specified
CNA Linux Linux affected 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac 40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5 git Not specified
CNA Linux Linux affected 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac f2649d98aa9ca8623149b3cb8df00c944f5655c7 git Not specified
CNA Linux Linux affected 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac 6afc9f4434fa8063aa768c2bf5bf98583aee0877 git Not specified
CNA Linux Linux affected 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac d0aa72604fbd80c8aabb46eda00535ed35570f1f git Not specified
CNA Linux Linux affected 4.14 Not specified
CNA Linux Linux unaffected 4.14 semver Not specified
CNA Linux Linux unaffected 4.19.311 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.273 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.214 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.153 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.83 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.23 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.11 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8.2 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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