Heimdall Security Logo

CVE-2022-50299

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : <5d8259c9d1915a50c60c7d6e9e7fb9b7da64a175, 766038846e875740cf4c20dfc5d5b292ba47360a, 0, 4.14.296, 4.19.262, <4.10, <41ca95033a0c47cd6dace1f0a36a6eb5ebe799e6, 5.4.220, <=5.10.*, <=4.14.*, <897b1450abe5a67c842a5d24173ce4449ccdfa94, 4.10, <3b0a2bd51f60418ecd67493586a2bb2174199de3, <=6.0.*, <1727fd5015d8f93474148f94e34cda5aa6ad4a43, <76694e9ce0b2238c0a5f3ba54f9361dd3770ec78, <=5.4.*, <f95825c4e51cf9a653b0ef947ac78401fc9d3a40, <=4.19.*, 6.1, 5.19.17, <97238b88583c27c9d3b4a0cedb45f816523f17c3, <=*, <=5.15.*, 6.0.3, <=5.19.*, 5.15.75, 5.10.150

Description

In the Linux kernel, the following vulnerability has been resolved: md: Replace snprintf with scnprintf Current code produces a warning as shown below when total characters in the constituent block device names plus the slashes exceeds 200. snprintf() returns the number of characters generated from the given input, which could cause the expression “200 – len” to wrap around to a large positive number. Fix this by using scnprintf() instead, which returns the actual number of characters written into the buffer. [ 1513.267938] ------------[ cut here ]------------ [ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510 [ 1513.267944] Modules linked in: <snip> [ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure #90~18.04.1-Ubuntu [ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022 [ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510 <-snip-> [ 1513.267982] Call Trace: [ 1513.267986] snprintf+0x45/0x70 [ 1513.267990] ? disk_name+0x71/0xa0 [ 1513.267993] dump_zones+0x114/0x240 [raid0] [ 1513.267996] ? _cond_resched+0x19/0x40 [ 1513.267998] raid0_run+0x19e/0x270 [raid0] [ 1513.268000] md_run+0x5e0/0xc50 [ 1513.268003] ? security_capable+0x3f/0x60 [ 1513.268005] do_md_run+0x19/0x110 [ 1513.268006] md_ioctl+0x195e/0x1f90 [ 1513.268007] blkdev_ioctl+0x91f/0x9f0 [ 1513.268010] block_ioctl+0x3d/0x50 [ 1513.268012] do_vfs_ioctl+0xa9/0x640 [ 1513.268014] ? __fput+0x162/0x260 [ 1513.268016] ksys_ioctl+0x75/0x80 [ 1513.268017] __x64_sys_ioctl+0x1a/0x20 [ 1513.268019] do_syscall_64+0x5e/0x200 [ 1513.268021] entry_SYSCALL_64_after_hwframe+0x44/0xa9

Gravité et risque d'exploitation

CVE-2022-50299 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.16 %, ce qui la place devant 4.7 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <5d8259c9d1915a50c60c7d6e9e7fb9b7da64a175, 766038846e875740cf4c20dfc5d5b292ba47360a, 0, 4.14.296, 4.19.262, <4.10, <41ca95033a0c47cd6dace1f0a36a6eb5ebe799e6, 5.4.220, <=5.10.*, <=4.14.*, <897b1450abe5a67c842a5d24173ce4449ccdfa94, 4.10, <3b0a2bd51f60418ecd67493586a2bb2174199de3, <=6.0.*, <1727fd5015d8f93474148f94e34cda5aa6ad4a43, <76694e9ce0b2238c0a5f3ba54f9361dd3770ec78, <=5.4.*, <f95825c4e51cf9a653b0ef947ac78401fc9d3a40, <=4.19.*, 6.1, 5.19.17, <97238b88583c27c9d3b4a0cedb45f816523f17c3, <=*, <=5.15.*, 6.0.3, <=5.19.*, 5.15.75, 5.10.150) 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

Rechercher une autre CVE