wifi: iwlwifi: mvm: Fix a memory corruption issue (Linux Linux)

CVE-2023-52531
HIGH 7.8

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: wifi: iwlwifi: mvm: Fix a memory corruption issue A few lines above, space is kzalloc()'ed for: sizeof(struct iwl_nvm_data) + sizeof(struct ieee80211_channel) + sizeof(struct ieee80211_rate) 'mvm->nvm_data' is a 'struct iwl_nvm_data', so it is fine. At the end of this structure, there is the 'channels' flex array. Each element is of type 'struct ieee80211_channel'. So only 1 element is allocated in this array. When doing: mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels; We point at the first element of the 'channels' flex array. So this is fine. However, when doing: mvm->nvm_data->bands[0].bitrates = (void *)((u8 *)mvm->nvm_data->channels + 1); because of the "(u8 *)" cast, we add only 1 to the address of the beginning of the flex array. It is likely that we want point at the 'struct ieee80211_rate' allocated just after. Remove the spurious casting so that the pointer arithmetic works as expected.

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:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c < 7c8faa31080342aec4903c9acb20caf82fcca1ef ; affected 8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c < 6b3223449c959a8be94a1f042288059e40fcccb0 ; affected 8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c < f06cdd8d4ba5252986f51f80cc30263636397128 ; affected 8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c < 8ba438ef3cacc4808a63ed0ce24d4f0942cfe55d
Linux · Linuxaffected 3.9 ; unaffected 0 < 3.9 ; unaffected 5.15.135 ≤ 5.15.* ; unaffected 6.1.57 ≤ 6.1.* ; unaffected 6.5.7 ≤ 6.5.* ; unaffected 6.6 ≤ *

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