Answer in brief
CVE-2026-89988 records a High severity (CVSS 7.8) vulnerability in kprobes: Protect kprobe_blacklist with RCU. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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.
CVSS is 7.8. 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=376e242429bf8539ef39a080ac113c8799840b13 <8f406205003f741225f620f0e357ca0de71d45e3 || >=376e242429bf8539ef39a080ac113c8799840b13 <630ed8734a02b992e8a97538179c2ece42c5210f || >=376e242429bf8539ef39a080ac113c8799840b13 <518d9b5568bb06f86e4434f7a30faa9612ea91ad || >=376e242429bf8539ef39a080ac113c8799840b13 <5da247e4d1e8661d4d6f997101d59967e8994e32 || >=376e242429bf8539ef39a080ac113c8799840b13 <6e62cf983a2bd547e6bbd3f935539233e5f97f8f || >=376e242429bf8539ef39a080ac113c8799840b13 <0c4256196b3a105307e2235fbfd85e768bbcdd0f | 8f406205003f741225f620f0e357ca0de71d45e3, 630ed8734a02b992e8a97538179c2ece42c5210f, 518d9b5568bb06f86e4434f7a30faa9612ea91ad, 5da247e4d1e8661d4d6f997101d59967e8994e32, 6e62cf983a2bd547e6bbd3f935539233e5f97f8f, 0c4256196b3a105307e2235fbfd85e768bbcdd0f |
| Linux/Linuxgeneric | 3.16 | Not reported |
| Linux/Linuxgeneric | >=376e242429bf8539ef39a080ac113c8799840b13 <3fb8386682ef4d0858c38bf0d8d8a47ba171fa23 || >=376e242429bf8539ef39a080ac113c8799840b13 <5d97a13defc648c64d138145ace429b6a3d08943 || >=376e242429bf8539ef39a080ac113c8799840b13 <8f406205003f741225f620f0e357ca0de71d45e3 || >=376e242429bf8539ef39a080ac113c8799840b13 <630ed8734a02b992e8a97538179c2ece42c5210f || >=376e242429bf8539ef39a080ac113c8799840b13 <518d9b5568bb06f86e4434f7a30faa9612ea91ad || >=376e242429bf8539ef39a080ac113c8799840b13 <5da247e4d1e8661d4d6f997101d59967e8994e32 || >=376e242429bf8539ef39a080ac113c8799840b13 <6e62cf983a2bd547e6bbd3f935539233e5f97f8f || >=376e242429bf8539ef39a080ac113c8799840b13 <0c4256196b3a105307e2235fbfd85e768bbcdd0f | 3fb8386682ef4d0858c38bf0d8d8a47ba171fa23, 5d97a13defc648c64d138145ace429b6a3d08943, 8f406205003f741225f620f0e357ca0de71d45e3, 630ed8734a02b992e8a97538179c2ece42c5210f, 518d9b5568bb06f86e4434f7a30faa9612ea91ad, 5da247e4d1e8661d4d6f997101d59967e8994e32, 6e62cf983a2bd547e6bbd3f935539233e5f97f8f, 0c4256196b3a105307e2235fbfd85e768bbcdd0f |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
In the Linux kernel, the following vulnerability has been resolved: kprobes: Protect kprobe_blacklist with RCU __within_kprobe_blacklist() traverses kprobe_blacklist without holding kprobe_mutex. When a module is unloaded, kprobe_remove_area_blacklist() removes blacklist entries and immediately frees them with kfree(). A concurrent call to within_kprobe_blacklist() can therefore dereference freed memory. Furthermore, within_kprobe_blacklist() can be called in atomic or non-preemptible contexts where the sleeping kprobe_mutex cannot be taken. Protect kprobe_blacklist with RCU. Use guard(rcu)() and list_for_each_entry_rcu() for traversal, list_add_tail_rcu() for insertions, list_del_rcu() for deletions, and kfree_rcu() to reclaim entries safely after a grace period.
Quoted source text, attributed separately from HOL analysis.