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CVE-2024-26878 Detail

Description

In 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.


Severity



CVSS 4.0 Severity and Metrics:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

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Hyperlink Resource
https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25
https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5
https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0
https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0
https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877
https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754
https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1
https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f
https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7

Weakness Enumeration

CWE-ID CWE Name Source

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-26878
NVD Published Date:
04/17/2024
NVD Last Modified:
04/17/2024
Source:
kernel.org