CVE-2024-26878quota: Fix potential NULL pointer dereference
Updated under an hour ago ()
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It affects Linux and 6 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.7 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac before 8514899c1a4edf802f03c408db901063aa3f05a1; from 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac before 49669f8e7eb053f91d239df7b1bfb4500255a9d0; from 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac before 61380537aa6dd32d8a723d98b8f1bd1b11d8fee0; 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac builds before 1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25; from 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac before 7f9e833fc0f9b47be503af012eb5903086939754; from 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac before 40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5; from 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac before f2649d98aa9ca8623149b3cb8df00c944f5655c7; 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac builds before 6afc9f4434fa8063aa768c2bf5bf98583aee0877; and 1 more ranges | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | before V1.1.1 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
linux linux_kernel linux:linux_kernel | before 4.19.311; from 4.20 before 5.4.273; from 5.5 before 5.10.214; from 5.11 before 5.15.153; from 5.16 before 6.1.83; from 6.2 before 6.6.23; from 6.7 before 6.7.11; from 6.8 before 6.8.2 | NVD |
debian debian_linux debian:debian_linux | 10.0 | NVD |
References
- https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1patch
- https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0patch
- https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0patch
- https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25patch
- https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754patch
- https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5patch
- https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7patch
- https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877patch
- https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1fpatch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlmailing-list
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlmailing-list
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.