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In the Linux kernel, the following vulnerability has been...

Moderate severity Unreviewed Published Aug 17, 2024 to the GitHub Advisory Database • Updated Sep 10, 2024

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

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

scsi: qla2xxx: Complete command early within lock

A crash was observed while performing NPIV and FW reset,

BUG: kernel NULL pointer dereference, address: 000000000000001c
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 1 PREEMPT_RT SMP NOPTI
RIP: 0010:dma_direct_unmap_sg+0x51/0x1e0
RSP: 0018:ffffc90026f47b88 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000021 RCX: 0000000000000002
RDX: 0000000000000021 RSI: 0000000000000000 RDI: ffff8881041130d0
RBP: ffff8881041130d0 R08: 0000000000000000 R09: 0000000000000034
R10: ffffc90026f47c48 R11: 0000000000000031 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8881565e4a20 R15: 0000000000000000
FS: 00007f4c69ed3d00(0000) GS:ffff889faac80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000001c CR3: 0000000288a50002 CR4: 00000000007706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:

? __die_body+0x1a/0x60
? page_fault_oops+0x16f/0x4a0
? do_user_addr_fault+0x174/0x7f0
? exc_page_fault+0x69/0x1a0
? asm_exc_page_fault+0x22/0x30
? dma_direct_unmap_sg+0x51/0x1e0
? preempt_count_sub+0x96/0xe0
qla2xxx_qpair_sp_free_dma+0x29f/0x3b0 [qla2xxx]
qla2xxx_qpair_sp_compl+0x60/0x80 [qla2xxx]
__qla2x00_abort_all_cmds+0xa2/0x450 [qla2xxx]

The command completion was done early while aborting the commands in driver
unload path but outside lock to avoid the WARN_ON condition of performing
dma_free_attr within the lock. However this caused race condition while
command completion via multiple paths causing system crash.

Hence complete the command early in unload path but within the lock to
avoid race condition.

References

Published by the National Vulnerability Database Aug 17, 2024
Published to the GitHub Advisory Database Aug 17, 2024
Last updated Sep 10, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.042%
(5th percentile)

Weaknesses

CVE ID

CVE-2024-42287

GHSA ID

GHSA-qw3c-xh2p-rwmf

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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