CVE-2025-39736
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
mm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock
In the Linux kernel, the following vulnerability has been resolved: mm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock When netpoll is enabled, calling pr_warn_once() while holding kmemleak_lock in mem_pool_alloc() can cause a deadlock due to lock inversion with the netconsole subsystem. This occurs because pr_warn_once() may trigger netpoll, which eventually leads to __alloc_skb() and back into kmemleak code, attempting to reacquire kmemleak_lock. This is the path for the deadlock. mem_pool_alloc() -> raw_spin_lock_irqsave(&kmemleak_lock, flags); -> pr_warn_once() -> netconsole subsystem -> netpoll -> __alloc_skb -> __create_object -> raw_spin_lock_irqsave(&kmemleak_lock, flags); Fix this by setting a flag and issuing the pr_warn_once() after kmemleak_lock is released.
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) |
|---|---|---|---|---|---|
| c5665868183fec689dbab9fb8505188b2c4f0757 | affected | git | c7b6ea0ede687e7460e593c5ea478f50aa41682a | Unavailable | None listed |
| c5665868183fec689dbab9fb8505188b2c4f0757 | affected | git | 4b0151e1d468eb2667c37b7af99b3c075072d334 | Unavailable | None listed |
| c5665868183fec689dbab9fb8505188b2c4f0757 | affected | git | f249d32bb54876b4b6c3ae071af8ddca77af390b | Unavailable | None listed |
| c5665868183fec689dbab9fb8505188b2c4f0757 | affected | git | 62879faa8efe8d8a9c7bf7606ee9c068012d7dac | Unavailable | None listed |
| c5665868183fec689dbab9fb8505188b2c4f0757 | affected | git | 1da95d3d4b7b1d380ebd87b71a61e7e6aed3265d | Unavailable | None listed |
| c5665868183fec689dbab9fb8505188b2c4f0757 | affected | git | a0854de00ce2ee27edf39037e7836ad580eb3350 | Unavailable | None listed |
| c5665868183fec689dbab9fb8505188b2c4f0757 | affected | git | 08f70be5e406ce47c822f2dd11c1170ca259605b | Unavailable | None listed |
| c5665868183fec689dbab9fb8505188b2c4f0757 | affected | git | a181b228b37a6a5625dad2bb4265bb7abb673e9f | Unavailable | None listed |
| c5665868183fec689dbab9fb8505188b2c4f0757 | affected | git | 47b0f6d8f0d2be4d311a49e13d2fd5f152f492b2 | 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) |
|---|---|---|---|---|---|
| 5.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.4 | Unavailable | None listed |
| 5.4.297 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.241 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.190 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.149 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.103 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.43 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.15.11 | unaffected | semver | Unavailable | 6.15.* | None listed |
| 6.16.2 | unaffected | semver | Unavailable | 6.16.* | None listed |
| 6.17 | unaffected | original_commit_for_fix | Unavailable | * | None listed |