tick/broadcast: Move per CPU pointer access into the atomic section (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 13 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: tick/broadcast: Move per CPU pointer access into the atomic section The recent fix for making the take over of the broadcast timer more reliable retrieves a per CPU pointer in preemptible context. This went unnoticed as compilers hoist the access into the non-preemptible region where the pointer is actually used. But of course it's valid that the compiler keeps it at the place where the code puts it which rightfully triggers: BUG: using smp_processor_id() in preemptible [00000000] code: caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0 Move it to the actual usage site which is in a non-preemptible region.
References
- https://git.kernel.org/stable/c/f54abf332a2bc0413cfa8bd6a8511f7aa99faea0
- https://git.kernel.org/stable/c/f91fb47ecacc178a83a77eeebd25cbaec18c01d6
- https://git.kernel.org/stable/c/668c6c4a7e9e9f081c06b70f30104fb7013437ed
- https://git.kernel.org/stable/c/541a900d245536d4809cb1aa322c3fcc2cdb58a6
- https://git.kernel.org/stable/c/7b3ec186ba93e333e9efe7254e7e31c1828e5d2d
- https://git.kernel.org/stable/c/b9d604933d5fd72dd37f24e1dc35f778297d745a
- https://git.kernel.org/stable/c/7dd12f85f150010ef7518201c63fa7e395f5c3e9
- https://git.kernel.org/stable/c/6881e75237a84093d0986f56223db3724619f26e
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.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-2024-41170
- GCVE · GCVE-0-2024-44968
CERT-FR advisories
- CERTFR-2025-AVI-0002 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0872 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.1.103 < 6.1.105cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.6.44 < 6.6.46cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.10.3 < 6.10.5cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected dfe19aa91378972f10530635ad83b2d77f481044 < f54abf332a2bc0413cfa8bd6a8511f7aa99faea0 ; affected 457a1c87d454455d671a3045cf0b56157be110a1 < f91fb47ecacc178a83a77eeebd25cbaec18c01d6 ; affected 9ef7190228145f959d9bc0ddca40ecf76bb413b0 < 668c6c4a7e9e9f081c06b70f30104fb7013437ed ; affected d3b165c10473aa6fc6141bb5b1f6e5b50c1fb774 < 541a900d245536d4809cb1aa322c3fcc2cdb58a6 ; affected 408bfb6b0a7f22e971ce6b600aec448769e580a8 < 7b3ec186ba93e333e9efe7254e7e31c1828e5d2d ; affected 3a58c590f6bd1d20eb1e76c5cea31c36cc032339 < b9d604933d5fd72dd37f24e1dc35f778297d745a |
| Linux · Linux | affected 6.1.103 < 6.1.105 ; affected 6.6.44 < 6.6.46 ; affected 6.10.3 < 6.10.5 |
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 |