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CVE-2023-53616

Vulnérabilité élevée dans Linux (Linux)

CVSS 7.8 · Élevée
EPSS 0.2%
Linux•Linux•Versions : <=6.1.*, 2.6.12, 0, <114ea3cb13ab25f7178cb60283adb93d2f96dad7, <756747d4b439e3e1159282ae89f17eefebbe9b25, <88484bde6f12126616b38e43b6c00edcd941f615, <2.6.12, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 4.19.295, <=5.10.*, <=4.14.*, <c3c0f0ddd851b3fa3e9d3450bbcd561f4f850469, <ef7311101ca43dd73b45bca7a30ac72d9535ff87, 5.4.257, 6.5.5, 6.6, <=5.4.*, 5.15.133, <=4.19.*, <5873df0195124be2f357de11bfd473ead4f90ed8, <6e2bda2c192d0244b5a78b787ef20aa10cb319b7, 6.1.55, <=*, 5.10.197, <=5.15.*, <=6.5.*, 4.14.326, <4de3a603010e0ca334487de24c6aab0777b7f808

Description

In the Linux kernel, the following vulnerability has been resolved: jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount syzbot found an invalid-free in diUnmount: BUG: KASAN: double-free in slab_free mm/slub.c:3661 [inline] BUG: KASAN: double-free in __kmem_cache_free+0x71/0x110 mm/slub.c:3674 Free of addr ffff88806f410000 by task syz-executor131/3632 CPU: 0 PID: 3632 Comm: syz-executor131 Not tainted 6.1.0-rc7-syzkaller-00012-gca57f02295f1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:284 print_report+0x107/0x1f0 mm/kasan/report.c:395 kasan_report_invalid_free+0xac/0xd0 mm/kasan/report.c:460 ____kasan_slab_free+0xfb/0x120 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1750 slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x71/0x110 mm/slub.c:3674 diUnmount+0xef/0x100 fs/jfs/jfs_imap.c:195 jfs_umount+0x108/0x370 fs/jfs/jfs_umount.c:63 jfs_put_super+0x86/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x310 fs/super.c:492 kill_block_super+0x79/0xd0 fs/super.c:1428 deactivate_locked_super+0xa7/0xf0 fs/super.c:332 cleanup_mnt+0x494/0x520 fs/namespace.c:1186 task_work_run+0x243/0x300 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x664/0x2070 kernel/exit.c:820 do_group_exit+0x1fd/0x2b0 kernel/exit.c:950 __do_sys_exit_group kernel/exit.c:961 [inline] __se_sys_exit_group kernel/exit.c:959 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:959 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd [...] JFS_IP(ipimap)->i_imap is not setting to NULL after free in diUnmount. If jfs_remount() free JFS_IP(ipimap)->i_imap but then failed at diMount(). JFS_IP(ipimap)->i_imap will be freed once again. Fix this problem by setting JFS_IP(ipimap)->i_imap to NULL after free.

Gravité et risque d'exploitation

CVE-2023-53616 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 0.15 %, ce qui la place devant 4.0 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, 2.6.12, 0, <114ea3cb13ab25f7178cb60283adb93d2f96dad7, <756747d4b439e3e1159282ae89f17eefebbe9b25, <88484bde6f12126616b38e43b6c00edcd941f615, <2.6.12, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 4.19.295, <=5.10.*, <=4.14.*, <c3c0f0ddd851b3fa3e9d3450bbcd561f4f850469, <ef7311101ca43dd73b45bca7a30ac72d9535ff87, 5.4.257, 6.5.5, 6.6, <=5.4.*, 5.15.133, <=4.19.*, <5873df0195124be2f357de11bfd473ead4f90ed8, <6e2bda2c192d0244b5a78b787ef20aa10cb319b7, 6.1.55, <=*, 5.10.197, <=5.15.*, <=6.5.*, 4.14.326, <4de3a603010e0ca334487de24c6aab0777b7f808) 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

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