fs: fix UAF/GPF bug in nilfs_mdt_destroy (Linux Linux)

CVE-2022-50367
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.22 % · centile 13 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: fs: fix UAF/GPF bug in nilfs_mdt_destroy In alloc_inode, inode_init_always() could return -ENOMEM if security_inode_alloc() fails, which causes inode->i_private uninitialized. Then nilfs_is_metadata_file_inode() returns true and nilfs_free_inode() wrongly calls nilfs_mdt_destroy(), which frees the uninitialized inode->i_private and leads to crashes(e.g., UAF/GPF). Fix this by moving security_inode_alloc just prior to this_cpu_inc(nr_inodes)

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: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 · nvd@nist.gov (Primary)
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d1ff475d7c83289d0a7faef346ea3bbf90818bad ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c0aa76b0f17f59dd9c9d3463550a2986a1d592e4 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ec2aab115eb38ac4992ea2fcc2a02fbe7af5cf48 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 70e4f70d54e0225f91814e8610477d65f33cefe4 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1e555c3ed1fce4b278aaebe18a64a934cece57d8 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 64b79e632869ad3ef6c098a4731d559381da1115
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 4.9.331 ≤ 4.9.* ; unaffected 4.14.296 ≤ 4.14.* ; unaffected 4.19.262 ≤ 4.19.* ; unaffected 5.4.218 ≤ 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