Heimdall Security Logo

CVE-2022-50423

Vulnérabilité élevée dans Linux (Linux)

CVSS 7.8 · Élevée
EPSS 0.2%
Linux•Linux•Versions : <6fde666278f91b85d71545a0ebbf41d8d7af8074, <=6.1.*, 7af5504c102a378376101dbd160246b10a814dd0, <dfdde4d5138bc023897033a5ac653a84e94805be, <3.15, <3.13, <02617006b5a46f2ea55ac61f5693c7afd7bf9276, <3.11, 0, 3.14.19, 4.14.303, <133462d35dae95edb944af86b986d4c9dec59bd1, <=4.9.*, 4.19.270, <470188b09e92d83c5a997f25f0e8fb8cd2bc3469, <=4.14.*, <=5.10.*, <=6.0.*, 5.4.229, 3.12.29, 6.0.16, 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce, <=5.4.*, <02f237423c9c6a18e062de2d474f85d5659e4eb9, <c9125b643fc51b8e662f2f614096ceb45a0adbc3, e2ab6731a36966d042a2d4dabd980496cd680f75, e29a15484d7ea949e49ae7fb7e576a575da824a6, <=4.19.*, 4.9.337, <f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6, 5.10.163, b3e98f0c4f996cd53b80bad71f0d7e4a2cf3a4e8, <=*, <=5.15.*, 6.1.2, <3.17, 3.16.3, 3.17, 3.10.55, <01f2c2052ea50fb9a8ce12e4e83aed0267934ef0, 6.2, 5.15.86

Description

In the Linux kernel, the following vulnerability has been resolved: ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() There is an use-after-free reported by KASAN: BUG: KASAN: use-after-free in acpi_ut_remove_reference+0x3b/0x82 Read of size 1 at addr ffff888112afc460 by task modprobe/2111 CPU: 0 PID: 2111 Comm: modprobe Not tainted 6.1.0-rc7-dirty Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), Call Trace: <TASK> kasan_report+0xae/0xe0 acpi_ut_remove_reference+0x3b/0x82 acpi_ut_copy_iobject_to_iobject+0x3be/0x3d5 acpi_ds_store_object_to_local+0x15d/0x3a0 acpi_ex_store+0x78d/0x7fd acpi_ex_opcode_1A_1T_1R+0xbe4/0xf9b acpi_ps_parse_aml+0x217/0x8d5 ... </TASK> The root cause of the problem is that the acpi_operand_object is freed when acpi_ut_walk_package_tree() fails in acpi_ut_copy_ipackage_to_ipackage(), lead to repeated release in acpi_ut_copy_iobject_to_iobject(). The problem was introduced by "8aa5e56eeb61" commit, this commit is to fix memory leak in acpi_ut_copy_iobject_to_iobject(), repeatedly adding remove operation, lead to "acpi_operand_object" used after free. Fix it by removing acpi_ut_remove_reference() in acpi_ut_copy_ipackage_to_ipackage(). acpi_ut_copy_ipackage_to_ipackage() is called to copy an internal package object into another internal package object, when it fails, the memory of acpi_operand_object should be freed by the caller.

Gravité et risque d'exploitation

CVE-2022-50423 obtient un score CVSS de 7.8/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.16 %, ce qui la place devant 5.1 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <6fde666278f91b85d71545a0ebbf41d8d7af8074, <=6.1.*, 7af5504c102a378376101dbd160246b10a814dd0, <dfdde4d5138bc023897033a5ac653a84e94805be, <3.15, <3.13, <02617006b5a46f2ea55ac61f5693c7afd7bf9276, <3.11, 0, 3.14.19, 4.14.303, <133462d35dae95edb944af86b986d4c9dec59bd1, <=4.9.*, 4.19.270, <470188b09e92d83c5a997f25f0e8fb8cd2bc3469, <=4.14.*, <=5.10.*, <=6.0.*, 5.4.229, 3.12.29, 6.0.16, 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce, <=5.4.*, <02f237423c9c6a18e062de2d474f85d5659e4eb9, <c9125b643fc51b8e662f2f614096ceb45a0adbc3, e2ab6731a36966d042a2d4dabd980496cd680f75, e29a15484d7ea949e49ae7fb7e576a575da824a6, <=4.19.*, 4.9.337, <f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6, 5.10.163, b3e98f0c4f996cd53b80bad71f0d7e4a2cf3a4e8, <=*, <=5.15.*, 6.1.2, <3.17, 3.16.3, 3.17, 3.10.55, <01f2c2052ea50fb9a8ce12e4e83aed0267934ef0, 6.2, 5.15.86) 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