CVE-2023-54325

Vulnérabilité élevée dans Linux (Linux)

CVSS 7.1 · Élevée
EPSS 0.1%
Linux•Linux•Versions : <dc3809f390357c8992f0a23083da934a20fef9af, <5.11, <=6.1.*, <=*, <=5.15.*, 5.15.99, 6.1.16, <=6.2.*, <2b1501f058245573a3aa6bf234d205dde1196184, 0, <7697139d5dfd491f4c495a914a1dd68f6e827a0f, <f6044cc3030e139f60c281386f28bda6e3049d66, 6.2.3, 5.11, 67916c9516893528ecce060ada1f58af0ce33d93, 6.3

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - fix out-of-bounds read When preparing an AER-CTR request, the driver copies the key provided by the user into a data structure that is accessible by the firmware. If the target device is QAT GEN4, the key size is rounded up by 16 since a rounded up size is expected by the device. If the key size is rounded up before the copy, the size used for copying the key might be bigger than the size of the region containing the key, causing an out-of-bounds read. Fix by doing the copy first and then update the keylen. This is to fix the following warning reported by KASAN: [ 138.150574] BUG: KASAN: global-out-of-bounds in qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat] [ 138.150641] Read of size 32 at addr ffffffff88c402c0 by task cryptomgr_test/2340 [ 138.150651] CPU: 15 PID: 2340 Comm: cryptomgr_test Not tainted 6.2.0-rc1+ #45 [ 138.150659] Hardware name: Intel Corporation ArcherCity/ArcherCity, BIOS EGSDCRB1.86B.0087.D13.2208261706 08/26/2022 [ 138.150663] Call Trace: [ 138.150668] <TASK> [ 138.150922] kasan_check_range+0x13a/0x1c0 [ 138.150931] memcpy+0x1f/0x60 [ 138.150940] qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat] [ 138.151006] qat_alg_skcipher_init_sessions+0xc1/0x240 [intel_qat] [ 138.151073] crypto_skcipher_setkey+0x82/0x160 [ 138.151085] ? prepare_keybuf+0xa2/0xd0 [ 138.151095] test_skcipher_vec_cfg+0x2b8/0x800

Gravité et risque d'exploitation

CVE-2023-54325 obtient un score CVSS de 7.1/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.14 %, ce qui la place devant 3.0 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <dc3809f390357c8992f0a23083da934a20fef9af, <5.11, <=6.1.*, <=*, <=5.15.*, 5.15.99, 6.1.16, <=6.2.*, <2b1501f058245573a3aa6bf234d205dde1196184, 0, <7697139d5dfd491f4c495a914a1dd68f6e827a0f, <f6044cc3030e139f60c281386f28bda6e3049d66, 6.2.3, 5.11, 67916c9516893528ecce060ada1f58af0ce33d93, 6.3) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références