ALSA: seq: Fix function prototype mismatch in snd_seq_expand_var_event (Linux Linux)

CVE-2022-48994
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.24 % · centile 15 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Fix function prototype mismatch in snd_seq_expand_var_event With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. seq_copy_in_user() and seq_copy_in_kernel() did not have prototypes matching snd_seq_dump_func_t. Adjust this and remove the casts. There are not resulting binary output differences. This was found as a result of Clang's new -Wcast-function-type-strict flag, which is more sensitive than the simpler -Wcast-function-type, which only checks for type width mismatches.

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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b38486e82ecb9f3046e0184205f6b61408fc40c9 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e385360705a0b346bdb57ce938249175d0613b8a ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2f46e95bf344abc4e74f8158901d32a869e0adb6 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 63badfed200219ca656968725f1a43df293ac936 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 15c42ab8d43acb73e2eba361ad05822c0af0ecfa ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fccd454129f6a0739651f7f58307cdb631fd6e89
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 4.9.336 ≤ 4.9.* ; unaffected 4.14.302 ≤ 4.14.* ; unaffected 4.19.269 ≤ 4.19.* ; unaffected 5.4.227 ≤ 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