bpf: Propagate error from htab_lock_bucket() to userspace (Linux Linux)

CVE-2022-50490
HIGH 7.1

En bref

Source
NVD
EPSS
EPSS 0.16 % · centile 5 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Propagate error from htab_lock_bucket() to userspace In __htab_map_lookup_and_delete_batch() if htab_lock_bucket() returns -EBUSY, it will go to next bucket. Going to next bucket may not only skip the elements in current bucket silently, but also incur out-of-bound memory access or expose kernel memory to userspace if current bucket_cnt is greater than bucket_size or zero. Fixing it by stopping batch operation and returning -EBUSY when htab_lock_bucket() fails, and the application can retry or skip the busy batch as needed.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HLinux
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 < 0e13425104903970a5ede853082d3bbb4edec6f3 ; affected 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 < 6bfee6eb3d6b96ae730a542909dd22b5f9f50d58 ; affected 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 < 4f1f39a8f1ce1b24fee6852d7dcd704ce7c4334d ; affected 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 < 66a7a92e4d0d091e79148a4c6ec15d1da65f4280
Linux · Linuxaffected 5.11 ; unaffected 0 < 5.11 ; unaffected 5.15.75 ≤ 5.15.* ; unaffected 5.19.17 ≤ 5.19.* ; unaffected 6.0.3 ≤ 6.0.* ; unaffected 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