ALSA: timer: Set lower bound of start tick time (Linux Linux)

CVE-2024-38618
MEDIUM 5.3

En bref

Source
NVD
EPSS
EPSS 0.64 % · centile 51 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: timer: Set lower bound of start tick time Currently ALSA timer doesn't have the lower limit of the start tick time, and it allows a very small size, e.g. 1 tick with 1ns resolution for hrtimer. Such a situation may lead to an unexpected RCU stall, where the callback repeatedly queuing the expire update, as reported by fuzzer. This patch introduces a sanity check of the timer start tick time, so that the system returns an error when a too small start size is set. As of this patch, the lower limit is hard-coded to 100us, which is small enough but can still work somehow.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LCISA-ADP
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected bbaf5e97337287479eb78dbc3822d9560bbfd2e2 < 68396c825c43664b20a3a1ba546844deb2b4e48f ; affected bbaf5e97337287479eb78dbc3822d9560bbfd2e2 < 74bfb8d90f2601718ae203faf45a196844c01fa1 ; affected bbaf5e97337287479eb78dbc3822d9560bbfd2e2 < bdd0aa055b8ec7e24bbc19513f3231958741d0ab ; affected bbaf5e97337287479eb78dbc3822d9560bbfd2e2 < 83f0ba8592b9e258fd80ac6486510ab1dcd7ad6e ; affected bbaf5e97337287479eb78dbc3822d9560bbfd2e2 < ceab795a67dd28dd942d0d8bba648c6c0f7a044b ; affected bbaf5e97337287479eb78dbc3822d9560bbfd2e2 < 2c95241ac5fc90c929d6c0c023e84bf0d30e84c3
Linux · Linuxaffected 2.6.29 ; unaffected 0 < 2.6.29 ; unaffected 4.19.316 ≤ 4.19.* ; unaffected 5.4.278 ≤ 5.4.* ; unaffected 5.10.219 ≤ 5.10.* ; unaffected 5.15.161 ≤ 5.15.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD