net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket (Linux Linux)

CVE-2024-42246
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.23 % · centile 14 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket When using a BPF program on kernel_connect(), the call can return -EPERM. This causes xs_tcp_setup_socket() to loop forever, filling up the syslog and causing the kernel to potentially freeze up. Neil suggested: This will propagate -EPERM up into other layers which might not be ready to handle it. It might be safer to map EPERM to an error we would be more likely to expect from the network system - such as ECONNREFUSED or ENETDOWN. ECONNREFUSED as error seems reasonable. For programs setting a different error can be out of reach (see handling in 4fbac77d2d09) in particular on kernels which do not have f10d05966196 ("bpf: Make BPF_PROG_RUN_ARRAY return -err instead of allow boolean"), thus given that it is better to simply remap for consistent behavior. UDP does handle EPERM in xs_udp_send_request().

Faiblesses (CWE)

  • CWE-835 — Boucle dont la condition de sortie est inatteignable (boucle infinie)

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 4fbac77d2d092b475dda9eea66da674369665427 < bc790261218952635f846aaf90bcc0974f6f62c6 ; affected 4fbac77d2d092b475dda9eea66da674369665427 < 934247ea65bc5eca8bdb7f8c0ddc15cef992a5d6 ; affected 4fbac77d2d092b475dda9eea66da674369665427 < 02ee1976edb21a96ce8e3fd4ef563f14cc16d041 ; affected 4fbac77d2d092b475dda9eea66da674369665427 < 5d8254e012996cee1a0f9cc920531cb7e4d9a011 ; affected 4fbac77d2d092b475dda9eea66da674369665427 < f2431e7db0fe0daccb2f06bb0d23740affcd2fa6 ; affected 4fbac77d2d092b475dda9eea66da674369665427 < d6c686c01c5f12ff8f7264e0ddf71df6cb0d4414
Linux · Linuxaffected 4.17 ; unaffected 0 < 4.17 ; unaffected 4.19.322 ≤ 4.19.* ; unaffected 5.4.284 ≤ 5.4.* ; unaffected 5.10.226 ≤ 5.10.* ; unaffected 5.15.167 ≤ 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