CVE-2024-56623

scsi: qla2xxx: Fix use after free on unload

MEDIUM

5.5

CVSS Score

Published: December 27, 2024 at 02:51 PM UTC

Updated: June 17, 2026 at 08:12 AM UTC

1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix use after free on unload System crash is observed with stack trace warning of use after free. There are 2 signals to tell dpc_thread to terminate (UNLOADING flag and kthread_stop). On setting the UNLOADING flag when dpc_thread happens to run at the time and sees the flag, this causes dpc_thread to exit and clean up itself. When kthread_stop is called for final cleanup, this causes use after free. Remove UNLOADING signal to terminate dpc_thread. Use the kthread_stop as the main signal to exit dpc_thread. [596663.812935] kernel BUG at mm/slub.c:294! [596663.812950] invalid opcode: 0000 [#1] SMP PTI [596663.812957] CPU: 13 PID: 1475935 Comm: rmmod Kdump: loaded Tainted: G IOE --------- - - 4.18.0-240.el8.x86_64 #1 [596663.812960] Hardware name: HP ProLiant DL380p Gen8, BIOS P70 08/20/2012 [596663.812974] RIP: 0010:__slab_free+0x17d/0x360 ... [596663.813008] Call Trace: [596663.813022] ? __dentry_kill+0x121/0x170 [596663.813030] ? _cond_resched+0x15/0x30 [596663.813034] ? _cond_resched+0x15/0x30 [596663.813039] ? wait_for_completion+0x35/0x190 [596663.813048] ? try_to_wake_up+0x63/0x540 [596663.813055] free_task+0x5a/0x60 [596663.813061] kthread_stop+0xf3/0x100 [596663.813103] qla2x00_remove_one+0x284/0x440 [qla2xxx]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v < 5.10.2314.8 ≤ v < 5.10.2314.8 ≤ v < 5.15.1744.8 ≤ v < 6.1.1204.8 ≤ v < 6.12.54.8 ≤ v < 6.134.8 ≤ v < 6.6.665.11 ≤ v < 5.15.1745.16 ≤ v < 6.1.1206.2 ≤ v < 6.6.666.7 ≤ v < 6.12.56.13 rc1a29b3dd7aa14facc902b40b8b5c4dccbfb2ad7d0

Vendor states this is fixed in 07c903db0a2ff84b68efa1a74a4de353ea591eb0 (fixed)

Vendor states this is fixed in 12f04fc8580eafb0510f805749553eb6213f323e (fixed)

Vendor states this is fixed in 15369e774f27ec790f207de87c0b541e3f90b22d (fixed)

Vendor states this is fixed in 6abf16d3c915b2feb68c1c8b25fcb71b13f98478 (fixed)

Vendor states this is fixed in b3e6f25176f248762a24d25ab8cf8c5e90874f80 (fixed)

Vendor states this is fixed in ca36d9d53745d5ec8946ef85006d4da605ea7c54 (fixed)

Vendor states this is fixed in 4.8 (unaffected)

Vendor states this is fixed in 5.10.231 (unaffected)

Vendor states this is fixed in 5.15.174 (unaffected)

Vendor states this is fixed in 6.1.120 (unaffected)

Vendor states this is fixed in 6.12.5 (unaffected)

Vendor states this is fixed in 6.13 (unaffected)