cbcvebase.
CVE-2024-40981
published 2024-07-12

CVE-2024-40981: In the Linux kernel, the following vulnerability has been resolved: batman-adv: bypass empty buckets in batadv_purge_orig_ref() Many syzbot reports are…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
14.0th percentile
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bypass empty buckets in batadv_purge_orig_ref() Many syzbot reports are pointing to soft lockups in batadv_purge_orig_ref() [1] Root cause is unknown, but we can avoid spending too much time there and perhaps get more interesting reports. [1] watchdog: BUG: soft lockup - CPU#0 stuck for 27s! [kworker/u4:6:621] Modules linked in: irq event stamp: 6182794 hardirqs last enabled at (6182793): [] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386 hardirqs last disabled at (6182794): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (6182794): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (6182792): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (6182792): [] batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287 softirqs last disabled at (6182790): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (6182790): [] batadv_purge_orig_ref+0x164/0x1228 net/batman-adv/originator.c:1271 CPU: 0 PID: 621 Comm: kworker/u4:6 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Workqueue: bat_events batadv_purge_orig pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : should_resched arch/arm64/include/asm/preempt.h:79 [inline] pc : __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:388 lr : __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386 sp : ffff800099007970 x29: ffff800099007980 x28: 1fffe00018fce1bd x27: dfff800000000000 x26: ffff0000d2620008 x25: ffff0000c7e70de8 x24: 0000000000000001 x23: 1fffe00018e57781 x22: dfff800000000000 x21: ffff80008aab71c4 x20: ffff0001b40136c0 x19: ffff0000c72bbc08 x18: 1fffe0001a817bb0 x17: ffff800125414000 x16: ffff80008032116c x15: 0000000000000001 x14: 1fffe0001ee9d610 x13: 0000000000000000 x12: 00000000

Affected

27 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.99-1 (bookworm)linux 6.1.99-1 (bookworm)
debianlinux-6.1< linux 6.1.99-1 (bookworm)linux 6.1.99-1 (bookworm)
linuxlinux
linuxlinux>= fb778ea173fcd58b8fc3d75c674f07fab187b55f < 79636f636126775436a11ee9cf00a9253a33ac1179636f636126775436a11ee9cf00a9253a33ac11
linuxlinux>= fb778ea173fcd58b8fc3d75c674f07fab187b55f < 154e3f862ba33675cf3f4abf0a0a309a89df87d2154e3f862ba33675cf3f4abf0a0a309a89df87d2
linuxlinux>= fb778ea173fcd58b8fc3d75c674f07fab187b55f < 82cdea8f3af1e36543c937df963d108c60bea03082cdea8f3af1e36543c937df963d108c60bea030
linuxlinux>= fb778ea173fcd58b8fc3d75c674f07fab187b55f < 92176caf9896572f00e741a93cecc0ef1172da0792176caf9896572f00e741a93cecc0ef1172da07
linuxlinux>= fb778ea173fcd58b8fc3d75c674f07fab187b55f < fed7914858a1f1f3e6350bb0f620d6ef15107d16fed7914858a1f1f3e6350bb0f620d6ef15107d16
linuxlinux>= fb778ea173fcd58b8fc3d75c674f07fab187b55f < 2685008a5f9a636434a8508419cee8158a2f52c82685008a5f9a636434a8508419cee8158a2f52c8
linuxlinux>= fb778ea173fcd58b8fc3d75c674f07fab187b55f < ae7f3cffe86aea3da0e8e079525a1ae619b8862aae7f3cffe86aea3da0e8e079525a1ae619b8862a
linuxlinux>= fb778ea173fcd58b8fc3d75c674f07fab187b55f < 40dc8ab605894acae1473e434944924a22cfaaa040dc8ab605894acae1473e434944924a22cfaaa0
linuxlinux_kernel< 4.19.3174.19.317
linuxlinux_kernel>= 0 < 5.10.221-15.10.221-1
linuxlinux_kernel>= 0 < 6.1.99-16.1.99-1
linuxlinux_kernel>= 0 < 6.9.7-16.9.7-1
linuxlinux_kernel>= 0 < 6.9.7-16.9.7-1
linuxlinux_kernel>= 0 < 5.4.0-195.2155.4.0-195.215
linuxlinux_kernel>= 0 < 5.15.0-121.1315.15.0-121.131
linuxlinux_kernel>= 0 < 6.8.0-44.446.8.0-44.44
linuxlinux_kernel>= 0 < 4.4.0-266.3004.4.0-266.300
linuxlinux_kernel>= 0 < 4.15.0-235.2474.15.0-235.247
linuxlinux_kernel>= 4.20 < 5.4.2795.4.279
linuxlinux_kernel>= 5.11 < 5.15.1625.15.162
linuxlinux_kernel>= 5.16 < 6.1.966.1.96
linuxlinux_kernel>= 5.5 < 5.10.2215.10.221

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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