vsock: remove vsock from connected table when connect is interrupted by a signal (Linux Linux)

CVE-2022-48786
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.25 % · 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: vsock: remove vsock from connected table when connect is interrupted by a signal vsock_connect() expects that the socket could already be in the TCP_ESTABLISHED state when the connecting task wakes up with a signal pending. If this happens the socket will be in the connected table, and it is not removed when the socket state is reset. In this situation it's common for the process to retry connect(), and if the connection is successful the socket will be added to the connected table a second time, corrupting the list. Prevent this by calling vsock_remove_connected() if a signal is received while waiting for a connection. This is harmless if the socket is not in the connected table, and if it is in the table then removing it will prevent list corruption from a double add. Note for backporting: this patch requires d5afa82c977e ("vsock: correct removal of socket from the list"), which is in all current stable trees except 4.9.y.

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 3.1MEDIUM 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 d021c344051af91f42c5ba9fdedc176740cbd238 < 0bb88f3f7e8d506f3efe46d694964117e20efbfc ; affected d021c344051af91f42c5ba9fdedc176740cbd238 < e3b3939fd137aab6d00d54bee0ee9244b286a608 ; affected d021c344051af91f42c5ba9fdedc176740cbd238 < 2910bcb9f67551a45397735e47b6d456eb8cd549 ; affected d021c344051af91f42c5ba9fdedc176740cbd238 < 5f326fe2aef411a6575628f92bd861463ea91df7 ; affected d021c344051af91f42c5ba9fdedc176740cbd238 < 87cd1bbd6677411e17369cd4b7389ab1e1fdba44 ; affected d021c344051af91f42c5ba9fdedc176740cbd238 < 787468ee7a435777521d33399d012fd591ae2f94
Linux · Linuxaffected 3.9 ; unaffected 0 < 3.9 ; unaffected 4.9.303 ≤ 4.9.* ; unaffected 4.14.268 ≤ 4.14.* ; unaffected 4.19.231 ≤ 4.19.* ; unaffected 5.4.181 ≤ 5.4.*

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