tty: n_gsm: fix possible out-of-bounds in gsm0_receive() (Linux Linux)

CVE-2024-36016
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.27 % · centile 18 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: tty: n_gsm: fix possible out-of-bounds in gsm0_receive() Assuming the following: - side A configures the n_gsm in basic option mode - side B sends the header of a basic option mode frame with data length 1 - side A switches to advanced option mode - side B sends 2 data bytes which exceeds gsm->len Reason: gsm->len is not used in advanced option mode. - side A switches to basic option mode - side B keeps sending until gsm0_receive() writes past gsm->buf Reason: Neither gsm->state nor gsm->len have been reset after reconfiguration. Fix this by changing gsm->count to gsm->len comparison from equal to less than. Also add upper limit checks against the constant MAX_MRU in gsm0_receive() and gsm1_receive() to harden against memory corruption of gsm->len and gsm->mru. All other checks remain as we still need to limit the data according to the user configuration and actual payload size.

Faiblesses (CWE)

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 7.7CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HCISA-ADP
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 7.7CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected e1eaea46bb4020b38a141b84f88565d4603f8dd0 < 9513d4148950b05bc99fa7314dc883cc0e1605e5 ; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 < b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56 ; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 < 0fb736c9931e02dbc7d9a75044c8e1c039e50f04 ; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 < 4c267110fc110390704cc065edb9817fdd10ff54 ; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 < 46f52c89a7e7d2691b97a9728e4591d071ca8abc ; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 < 774d83b008eccb1c48c14dc5486e7aa255731350
Linux · Linuxaffected 2.6.35 ; unaffected 0 < 2.6.35 ; unaffected 4.19.316 ≤ 4.19.* ; unaffected 5.4.278 ≤ 5.4.* ; unaffected 5.10.219 ≤ 5.10.* ; unaffected 5.15.161 ≤ 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