sched/smt: Fix unbalance sched_smt_present dec/inc (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: sched/smt: Fix unbalance sched_smt_present dec/inc I got the following warn report while doing stress test: jump label: negative count! WARNING: CPU: 3 PID: 38 at kernel/jump_label.c:263 static_key_slow_try_dec+0x9d/0xb0 Call Trace: <TASK> __static_key_slow_dec_cpuslocked+0x16/0x70 sched_cpu_deactivate+0x26e/0x2a0 cpuhp_invoke_callback+0x3ad/0x10d0 cpuhp_thread_fun+0x3f5/0x680 smpboot_thread_fn+0x56d/0x8d0 kthread+0x309/0x400 ret_from_fork+0x41/0x70 ret_from_fork_asm+0x1b/0x30 </TASK> Because when cpuset_cpu_inactive() fails in sched_cpu_deactivate(), the cpu offline failed, but sched_smt_present is decremented before calling sched_cpu_deactivate(), it leads to unbalanced dec/inc, so fix it by incrementing sched_smt_present in the error path.
References
- https://git.kernel.org/stable/c/2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4
- https://git.kernel.org/stable/c/2cf7665efe451e48d27953e6b5bc627d518c902b
- https://git.kernel.org/stable/c/65727331b60197b742089855ac09464c22b96f66
- https://git.kernel.org/stable/c/d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab
- https://git.kernel.org/stable/c/e22f910a26cc2a3ac9c66b8e935ef2a7dd881117
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2024-41161
- GCVE · GCVE-0-2024-44958
CERT-FR advisories
- CERTFR-2025-AVI-0024 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0022 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0002 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2024-AVI-1102 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-1080 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2024-AVI-1048 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-1013 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0999 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0997 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.14.86 < 4.15cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.19.7 < 4.20cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.15.165cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.1.105cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.6.46cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.10.5cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected c5511d03ec090980732e929c318a7a6374b5550e < 2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4 ; affected c5511d03ec090980732e929c318a7a6374b5550e < 2cf7665efe451e48d27953e6b5bc627d518c902b ; affected c5511d03ec090980732e929c318a7a6374b5550e < 65727331b60197b742089855ac09464c22b96f66 ; affected c5511d03ec090980732e929c318a7a6374b5550e < d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab ; affected c5511d03ec090980732e929c318a7a6374b5550e < e22f910a26cc2a3ac9c66b8e935ef2a7dd881117 ; affected 01659361c63fdc91c0af239d08cdd211d590a656 |
| Linux · Linux | affected 4.20 ; unaffected 0 < 4.20 ; unaffected 5.15.165 ≤ 5.15.* ; unaffected 6.1.105 ≤ 6.1.* ; unaffected 6.6.46 ≤ 6.6.* ; unaffected 6.10.5 ≤ 6.10.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |