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bdu:2024-10745

certfr-2024-avi-0496 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un at…

certfr-2024-avi-0496

EUVD-2026-344510

fkie_cve-2021-47536

In the Linux kernel, the following vulnerability has been resolved:

net/smc: fix wrong list_del in smc_lgr_cleanup_early

smc_lgr_cleanup_early() meant to delete the link group from the link group list, but it deleted the list head by mistake.

This may cause memory corruption since we didn't remove the real link group from the list and later memseted the link group structure. We got a list corruption panic when testing:

[ 231.277259] list_del corruption. prev->next should be ffff8881398a8000, but was 0000000000000000 [ 231.278222] ------------[ cut here ]------------ [ 231.278726] kernel BUG at lib/list_debug.c:53! [ 231.279326] invalid opcode: 0000 [#1] SMP NOPTI [ 231.279803] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.10.46+ #435 [ 231.280466] Hardware name: Alibaba Cloud ECS, BIOS 8c24b4c 04/01/2014 [ 231.281248] Workqueue: events smc_link_down_work [ 231.281732] RIP: 0010:__list_del_entry_valid+0x70/0x90 [ 231.282258] Code: 4c 60 82 e8 7d cc 6a 00 0f 0b 48 89 fe 48 c7 c7 88 4c 60 82 e8 6c cc 6a 00 0f 0b 48 89 fe 48 c7 c7 c0 4c 60 82 e8 5b cc 6a 00 <0f> 0b 48 89 fe 48 c7 c7 00 4d 60 82 e8 4a cc 6a 00 0f 0b cc cc cc [ 231.284146] RSP: 0018:ffffc90000033d58 EFLAGS: 00010292 [ 231.284685] RAX: 0000000000000054 RBX: ffff8881398a8000 RCX: 0000000000000000 [ 231.285415] RDX: 0000000000000001 RSI: ffff88813bc18040 RDI: ffff88813bc18040 [ 231.286141] RBP: ffffffff8305ad40 R08: 0000000000000003 R09: 0000000000000001 [ 231.286873] R10: ffffffff82803da0 R11: ffff…

SUSE-SU-2024:2008-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2021-47536

Affected: Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux-aws-5.0, Ubuntu:18.04:LTS: linux-aws-5.3, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3, Ubuntu:18.04:LTS: linux-gke-4.15, Ubuntu:18.04:LTS: linux-gke-5.4 and 54 more

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix wrong list_del in smc_lgr_cleanup_early smc_lgr_cleanup_early() meant to delete the link group from the link group list, but it deleted the list head by mistake. This may cause memory corruption since we didn't remove the real link group from the list and later memseted the link group structure. We got a list corruption panic when testing: [ 231.277259] list_del corruption. prev->next should be ffff8881398a8000, but was 0000000000000000 [ 231.278222] ------------[ cut here ]------------ [ 231.278726] kernel BUG at lib/list_debug.c:53! [ 231.279326] invalid opcode: 0000 [#1] SMP NOPTI [ 231.279803] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.10.46+ #435 [ 231.280466] Hardware name: Alibaba Cloud ECS, BIOS 8c24b4c 04/01/2014 [ 231.281248] Workqueue: events smc_link_down_work [ 231.281732] RIP: 0010:__list_del_entry_valid+0x70/0x90 [ 231.282258] Code: 4c 60 82 e8 7d cc 6a 00 0f 0b 48 89 fe 48 c7 c7 88 4c 60 82 e8 6c cc 6a 00 0f 0b 48 89 fe 48 c7 c7 c0 4c 60 82 e8 5b cc 6a 00 <0f> 0b 48 89 fe 48 c7 c7 00 4d 60 82 e8 4a cc 6a 00 0f 0b cc cc cc [ 231.284146] RSP: 0018:ffffc90000033d58 EFLAGS: 00010292 [ 231.284685] RAX: 0000000000000054 RBX: ffff8881398a8000 RCX: 0000000000000000 [ 231.285415] RDX: 0000000000000001 RSI: ffff88813bc18040 RDI: ffff88813bc18040 [ 231.286141] RBP: ffffffff8305ad40 R08: 0000000000000003 R09: 0000000000000001 [ 231.286873] R10: ffffffff82803da0 R11: ffffc900…

WID-SEC-W-2024-1235 — Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service und unspezifische Angriffe

Ein lokaler Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen oder unspezifische Angriffe durchzuführen.