In the Linux kernel, the following vulnerability has been resolved:
quota: Fix race of dquot_scan_active() with quota deactivation
dquot_scan_active() can race with quota deactivation in
quota_release_workfn() like:
CPU0 (quota_release_workfn) CPU1 (dquot_scan_active)
============================== ==============================
spin_lock(&dq_list_lock);
list_replace_init(
&releasing_dquots, &rls_head);
/* dquot X on rls_head,
dq_count == 0,
DQ_ACTIVE_B still set */
spin_unlock(&dq_list_lock);
synchronize_srcu(&dquot_srcu);
spin_lock(&dq_list_lock);
list_for_each_entry(dquot,
&inuse_list, dq_inuse) {
/* finds dquot X */
dquot_active(X) -> true
atomic_inc(&X->dq_count);
}
spin_unlock(&dq_list_lock);
spin_lock(&dq_list_lock);
dquot = list_first_entry(&rls_head);
WARN_ON_ONCE(atomic_read(&dquot->dq_count));
The problem is not only a cosmetic one as under memory pressure the
caller of dquot_scan_active() can end up working on freed dquot.
Fix the problem by making sure the dquot is removed from releasing list
when we acquire a reference to it.
References
Configurations
Configuration 1 (hide)
|
History
21 Jul 2026, 17:23
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.6:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.6:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.6:-:*:*:*:*:*:* |
|
| CWE | CWE-362 | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/2bdc80f4619411e5bd4a3ef23f51e14021ed457c - Patch | |
| References | () https://git.kernel.org/stable/c/61e25f664dc2a08299e07d84c85776abc2350f75 - Patch | |
| References | () https://git.kernel.org/stable/c/6678dde265708003c2b42551af4a2e3cb05decd5 - Patch | |
| References | () https://git.kernel.org/stable/c/82cbdb4c1ebb5ea7d7bd45c18d3483b5bd32ebc1 - Patch | |
| References | () https://git.kernel.org/stable/c/ac8a2e0d287ebf35e5d7e51e260b4e146648ba4a - Patch | |
| References | () https://git.kernel.org/stable/c/e93ab401da4b2e2c1b8ef2424de2f238d51c8b2d - Patch | |
| References | () https://git.kernel.org/stable/c/f9438cb8c8ec3adc84b2b450a3aab0123d074c3b - Patch | |
| References | () https://git.kernel.org/stable/c/fdd424d7c35633ac577fd87d1b043d1b8a6cd350 - Patch |
28 Jun 2026, 08:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
24 Jun 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-24 17:17
Updated : 2026-07-21 17:23
NVD link : CVE-2026-53050
Mitre link : CVE-2026-53050
CVE.ORG link : CVE-2026-53050
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')