Answer in brief
CVE-2025-38108 records a Unknown severity vulnerability in net_sched: red: fix a race in __red_change(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2025-38108 records a Unknown severity vulnerability in net_sched: red: fix a race in __red_change(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0c8d13ac96070000da33f394f45e9c19638483c5 <2790c4ec481be45a80948d059cd7c9a06bc37493 || >=0c8d13ac96070000da33f394f45e9c19638483c5 <a1bf6a4e9264a685b0e642994031f9c5aad72414 || >=0c8d13ac96070000da33f394f45e9c19638483c5 <110a47efcf23438ff8d31dbd9c854fae2a48bf98 || >=0c8d13ac96070000da33f394f45e9c19638483c5 <f569984417a4e12c67366e69bdcb752970de921d || >=0c8d13ac96070000da33f394f45e9c19638483c5 <2a71924ca4af59ffc00f0444732b6cd54b153d0e || >=0c8d13ac96070000da33f394f45e9c19638483c5 <4b755305b2b0618e857fdadb499365b5f2e478d1 || >=0c8d13ac96070000da33f394f45e9c19638483c5 <444ad445df5496a785705019268a8a84b84484bb || >=0c8d13ac96070000da33f394f45e9c19638483c5 <85a3e0ede38450ea3053b8c45d28cf55208409b8 | 2790c4ec481be45a80948d059cd7c9a06bc37493, a1bf6a4e9264a685b0e642994031f9c5aad72414, 110a47efcf23438ff8d31dbd9c854fae2a48bf98, f569984417a4e12c67366e69bdcb752970de921d, 2a71924ca4af59ffc00f0444732b6cd54b153d0e, 4b755305b2b0618e857fdadb499365b5f2e478d1, 444ad445df5496a785705019268a8a84b84484bb, 85a3e0ede38450ea3053b8c45d28cf55208409b8 |
| Linux/Linuxgeneric | 5.0 | Not reported |
Published upstream
Jul 3, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: net_sched: red: fix a race in __red_change() Gerrard Tai reported a race condition in RED, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0c8d13ac96070000da33f394f45e9c19638483c5 <2790c4ec481be45a80948d059cd7c9a06bc37493 || >=0c8d13ac96070000da33f394f45e9c19638483c5 <a1bf6a4e9264a685b0e642994031f9c5aad72414 || >=0c8d13ac96070000da33f394f45e9c19638483c5 <110a47efcf23438ff8d31dbd9c854fae2a48bf98 || >=0c8d13ac96070000da33f394f45e9c19638483c5 <f569984417a4e12c67366e69bdcb752970de921d || >=0c8d13ac96070000da33f394f45e9c19638483c5 <2a71924ca4af59ffc00f0444732b6cd54b153d0e || >=0c8d13ac96070000da33f394f45e9c19638483c5 <4b755305b2b0618e857fdadb499365b5f2e478d1 || >=0c8d13ac96070000da33f394f45e9c19638483c5 <444ad445df5496a785705019268a8a84b84484bb || >=0c8d13ac96070000da33f394f45e9c19638483c5 <85a3e0ede38450ea3053b8c45d28cf55208409b8 | 2790c4ec481be45a80948d059cd7c9a06bc37493, a1bf6a4e9264a685b0e642994031f9c5aad72414, 110a47efcf23438ff8d31dbd9c854fae2a48bf98, f569984417a4e12c67366e69bdcb752970de921d, 2a71924ca4af59ffc00f0444732b6cd54b153d0e, 4b755305b2b0618e857fdadb499365b5f2e478d1, 444ad445df5496a785705019268a8a84b84484bb, 85a3e0ede38450ea3053b8c45d28cf55208409b8 |
| Linux/Linuxgeneric | 5.0 | Not reported |
Published upstream
Jul 3, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: net_sched: red: fix a race in __red_change() Gerrard Tai reported a race condition in RED, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.
Quoted source text, attributed separately from HOL analysis.