CVE-2024-56623

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxa29b3dd7aa14facc902b40b8b5c4dccbfb2ad7d0 < 12f04fc8580eafb0510f805749553eb6213f323eaffected
LinuxLinuxa29b3dd7aa14facc902b40b8b5c4dccbfb2ad7d0 < ca36d9d53745d5ec8946ef85006d4da605ea7c54affected
LinuxLinuxa29b3dd7aa14facc902b40b8b5c4dccbfb2ad7d0 < b3e6f25176f248762a24d25ab8cf8c5e90874f80affected
LinuxLinuxa29b3dd7aa14facc902b40b8b5c4dccbfb2ad7d0 < 15369e774f27ec790f207de87c0b541e3f90b22daffected
LinuxLinuxa29b3dd7aa14facc902b40b8b5c4dccbfb2ad7d0 < 6abf16d3c915b2feb68c1c8b25fcb71b13f98478affected
LinuxLinuxa29b3dd7aa14facc902b40b8b5c4dccbfb2ad7d0 < 07c903db0a2ff84b68efa1a74a4de353ea591eb0affected
LinuxLinux4.8affected
LinuxLinux0 < 4.8unaffected
LinuxLinux5.10.231 <= 5.10.*unaffected
LinuxLinux5.15.174 <= 5.15.*unaffected
LinuxLinux6.1.120 <= 6.1.*unaffected
LinuxLinux6.6.66 <= 6.6.*unaffected
LinuxLinux6.12.5 <= 6.12.*unaffected
LinuxLinux6.13 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References