tracing: Fix overflow in get_free_elt() (Linux Linux)

CVE-2024-43890
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.26 % · centile 17 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt".

Faiblesses (CWE)

  • CWE-190 — Débordement d'entier

Références

Scores

VersionScoreVecteurÉvalué par
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)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 08d43a5fa063e03c860f2f391a30c388bcbc948e < 302ceb625d7b990db205a15e371f9a71238de91c ; affected 08d43a5fa063e03c860f2f391a30c388bcbc948e < d3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18 ; affected 08d43a5fa063e03c860f2f391a30c388bcbc948e < eb223bf01e688dfe37e813c8988ee11c8c9f8d0a ; affected 08d43a5fa063e03c860f2f391a30c388bcbc948e < cd10d186a5409a1fe6e976df82858e9773a698da ; affected 08d43a5fa063e03c860f2f391a30c388bcbc948e < 788ea62499b3c18541fd6d621964d8fafbc4aec5 ; affected 08d43a5fa063e03c860f2f391a30c388bcbc948e < a172c7b22bc2feaf489cfc6d6865f7237134fdf8
Linux · Linuxaffected 4.7 ; unaffected 0 < 4.7 ; unaffected 4.19.320 ≤ 4.19.* ; unaffected 5.4.282 ≤ 5.4.* ; unaffected 5.10.224 ≤ 5.10.* ; unaffected 5.15.165 ≤ 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