ftrace: Also allocate and copy hash for reading of filter files (Linux Linux)

CVE-2025-39689
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.18 % · centile 8 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ftrace: Also allocate and copy hash for reading of filter files Currently the reader of set_ftrace_filter and set_ftrace_notrace just adds the pointer to the global tracer hash to its iterator. Unlike the writer that allocates a copy of the hash, the reader keeps the pointer to the filter hashes. This is problematic because this pointer is static across function calls that release the locks that can update the global tracer hashes. This can cause UAF and similar bugs. Allocate and copy the hash for reading the filter files like it is done for the writers. This not only fixes UAF bugs, but also makes the code a bit simpler as it doesn't have to differentiate when to free the iterator's hash between writers and readers.

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected c20489dad156dd9919ebd854bbace46dbd2576a3 < 12064e1880fc9202be75ff668205b1703d92f74f ; affected c20489dad156dd9919ebd854bbace46dbd2576a3 < c4cd93811e038d19f961985735ef7bb128078dfb ; affected c20489dad156dd9919ebd854bbace46dbd2576a3 < e0b6b223167e1edde5c82edf38e393c06eda1f13 ; affected c20489dad156dd9919ebd854bbace46dbd2576a3 < a40c69f4f1ed96acbcd62e9b5ff3a596f0a91309 ; affected c20489dad156dd9919ebd854bbace46dbd2576a3 < 3b114a3282ab1a12cb4618a8f45db5d7185e784a ; affected c20489dad156dd9919ebd854bbace46dbd2576a3 < c591ba1acd081d4980713e47869dd1cc3d963d19
Linux · Linuxaffected 4.12 ; unaffected 0 < 4.12 ; unaffected 5.4.297 ≤ 5.4.* ; unaffected 5.10.241 ≤ 5.10.* ; unaffected 5.15.190 ≤ 5.15.* ; unaffected 6.1.149 ≤ 6.1.*

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