CVE-2026-89753
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
mm/vmscan: report RCU-tasks quiescent states in shrink_lruvec()
In the Linux kernel, the following vulnerability has been resolved: mm/vmscan: report RCU-tasks quiescent states in shrink_lruvec() I am seeing some rcu_tasks stalls in the Meta fleet during reclaim. INFO: rcu_tasks detected stalls on tasks: 0000000088620d09: .. nvcsw: 6735/6735 holdout: 1 idle_cpu: -1/8 task:GlobalCPUThread state:R running task pid:2552016 tgid:2524552 Call Trace: shrink_lruvec mem_cgroup_iter shrink_node do_try_to_free_pages try_to_free_pages __alloc_frozen_pages_noprof alloc_pages_noprof pte_alloc_one __pte_alloc handle_mm_fault Nothing promises direct reclaim returns in bounded time, and the scan loop in shrink_lruvec() only calls cond_resched(), which is a no-op on PREEMPTION kernels. Involuntary preemption is not a Tasks-RCU quiescent state, so the reclaiming task never reports one and becomes a holdout. Upgrade it to cond_resched_tasks_rcu_qs(), which reports a quiescent state even when cond_resched() does nothing. PS: This has been discussed in [1]
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 8315f42295d2667a7f942f154b73a86fd7cb2227 | affected | git | 4f50593c9cbc883d8c9b50148a3e8a8b1fd35f57 | Unavailable | None listed |
| 8315f42295d2667a7f942f154b73a86fd7cb2227 | affected | git | 4cdc1bdf40944de5c6b118fef07ad23f07844338 | Unavailable | None listed |
| 8315f42295d2667a7f942f154b73a86fd7cb2227 | affected | git | a67a00a70a7c8309ca47ea157ef3e8ed3d268f5b | Unavailable | None listed |
| 8315f42295d2667a7f942f154b73a86fd7cb2227 | affected | git | 029c9408049f7f582230322057b7075bea594fd5 | Unavailable | None listed |
| 8315f42295d2667a7f942f154b73a86fd7cb2227 | affected | git | b5391676c61d94ffe3272dcf6723738b802f79e8 | Unavailable | None listed |
| 8315f42295d2667a7f942f154b73a86fd7cb2227 | affected | git | 3fd50239986302cb050d3649351bcec00fa9d5ab | Unavailable | None listed |
| 8315f42295d2667a7f942f154b73a86fd7cb2227 | affected | git | cf3ba0911a1cf8680371ff113b90088edd01d2bb | Unavailable | None listed |
| 8315f42295d2667a7f942f154b73a86fd7cb2227 | affected | git | 25f52e81216884a7444bf07a606691feb09a94e3 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.18 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |