scsi: qla2xxx: Fix command flush on cable pull

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-26931
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-01 06:15:07 UTC
Updated2026-08-04 11:17:23 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix command flush on cable pull System crash due to command failed to flush back to SCSI layer. BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 PGD 0 P4D 0 Oops: 0000 [#1] SMP NOPTI CPU: 27 PID: 793455 Comm: kworker/u130:6 Kdump: loaded Tainted: G OE --------- - - 4.18.0-372.9.1.el8.x86_64 #1 Hardware name: HPE ProLiant DL360 Gen10/ProLiant DL360 Gen10, BIOS U32 09/03/2021 Workqueue: nvme-wq nvme_fc_connect_ctrl_work [nvme_fc] RIP: 0010:__wake_up_common+0x4c/0x190 Code: 24 10 4d 85 c9 74 0a 41 f6 01 04 0f 85 9d 00 00 00 48 8b 43 08 48 83 c3 08 4c 8d 48 e8 49 8d 41 18 48 39 c3 0f 84 f0 00 00 00 <49> 8b 41 18 89 54 24 08 31 ed 4c 8d 70 e8 45 8b 29 41 f6 c5 04 75 RSP: 0018:ffff95f3e0cb7cd0 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffff8b08d3b26328 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff8b08d3b26320 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffffffffffe8 R10: 0000000000000000 R11: ffff95f3e0cb7a60 R12: ffff95f3e0cb7d20 R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8b2fdf6c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000002f1e410002 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: __wake_up_common_lock+0x7c/0xc0 qla_nvme_ls_req+0x355/0x4c0 [qla2xxx] qla2xxx [0000:12:00.1]-f084:3: qlt_free_session_done: se_sess 0000000000000000 / sess ffff8ae1407ca000 from port 21:32:00:02:ac:07:ee:b8 loop_id 0x02 s_id 01:02:00 logout 1 keep 0 els_logo 0 ? __nvme_fc_send_ls_req+0x260/0x380 [nvme_fc] qla2xxx [0000:12:00.1]-207d:3: FCPort 21:32:00:02:ac:07:ee:b8 state transitioned from ONLINE to LOST - portid=010200. ? nvme_fc_send_ls_req.constprop.42+0x1a/0x45 [nvme_fc] qla2xxx [0000:12:00.1]-2109:3: qla2x00_schedule_rport_del 21320002ac07eeb8. rport ffff8ae598122000 roles 1 ? nvme_fc_connect_ctrl_work.cold.63+0x1e3/0xa7d [nvme_fc] qla2xxx [0000:12:00.1]-f084:3: qlt_free_session_done: se_sess 0000000000000000 / sess ffff8ae14801e000 from port 21:32:01:02:ad:f7:ee:b8 loop_id 0x04 s_id 01:02:01 logout 1 keep 0 els_logo 0 ? __switch_to+0x10c/0x450 ? process_one_work+0x1a7/0x360 qla2xxx [0000:12:00.1]-207d:3: FCPort 21:32:01:02:ad:f7:ee:b8 state transitioned from ONLINE to LOST - portid=010201. ? worker_thread+0x1ce/0x390 ? create_worker+0x1a0/0x1a0 qla2xxx [0000:12:00.1]-2109:3: qla2x00_schedule_rport_del 21320102adf7eeb8. rport ffff8ae3b2312800 roles 70 ? kthread+0x10a/0x120 qla2xxx [0000:12:00.1]-2112:3: qla_nvme_unregister_remote_port: unregister remoteport on ffff8ae14801e000 21320102adf7eeb8 ? set_kthread_struct+0x40/0x40 qla2xxx [0000:12:00.1]-2110:3: remoteport_delete of ffff8ae14801e000 21320102adf7eeb8 completed. ? ret_from_fork+0x1f/0x40 qla2xxx [0000:12:00.1]-f086:3: qlt_free_session_done: waiting for sess ffff8ae14801e000 logout The system was under memory stress where driver was not able to allocate an SRB to carry out error recovery of cable pull. The failure to flush causes upper layer to start modifying scsi_cmnd. When the system frees up some memory, the subsequent cable pull trigger another command flush. At this point the driver access a null pointer when attempting to DMA unmap the SGL. Add a check to make sure commands are flush back on session tear down to prevent the null pointer access.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 726b85487067d7f5b23495bc33c484b8517c4074 b73377124f56d2fec154737c2f8d2e839c237d5a git Not specified
CNA Linux Linux affected 726b85487067d7f5b23495bc33c484b8517c4074 d7a68eee87b05d4e29419e6f151aef99314970a9 git Not specified
CNA Linux Linux affected 726b85487067d7f5b23495bc33c484b8517c4074 67b2d35853c2da25a8ca1c4190a5e96d3083c2ac git Not specified
CNA Linux Linux affected 726b85487067d7f5b23495bc33c484b8517c4074 a859f6a8f4234b8ef62862bf7a92f1af5f8cd47a git Not specified
CNA Linux Linux affected 726b85487067d7f5b23495bc33c484b8517c4074 09c0ac18cac206ed1218b1fe6c1a0918e5ea9211 git Not specified
CNA Linux Linux affected 726b85487067d7f5b23495bc33c484b8517c4074 8de1584ec4fe0ebea33c273036e7e0a05e65c81d git Not specified
CNA Linux Linux affected 726b85487067d7f5b23495bc33c484b8517c4074 8f0d32004e3a572bb77e6c11c2797c87f8c9703d git Not specified
CNA Linux Linux affected 726b85487067d7f5b23495bc33c484b8517c4074 ec7587eef003cab15a13446d67c3adb88146a150 git Not specified
CNA Linux Linux affected 726b85487067d7f5b23495bc33c484b8517c4074 a27d4d0e7de305def8a5098a614053be208d1aa1 git Not specified
CNA Linux Linux affected 4.11 Not specified
CNA Linux Linux unaffected 4.11 semver Not specified
CNA Linux Linux unaffected 4.19.312 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.274 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.215 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.154 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.84 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.24 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.12 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8.3 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ec7587eef003cab15a13446d67c3adb88146a150 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/67b2d35853c2da25a8ca1c4190a5e96d3083c2ac af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/8de1584ec4fe0ebea33c273036e7e0a05e65c81d af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/d7a68eee87b05d4e29419e6f151aef99314970a9 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/8f0d32004e3a572bb77e6c11c2797c87f8c9703d af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/a27d4d0e7de305def8a5098a614053be208d1aa1 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/a859f6a8f4234b8ef62862bf7a92f1af5f8cd47a af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/b73377124f56d2fec154737c2f8d2e839c237d5a af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/09c0ac18cac206ed1218b1fe6c1a0918e5ea9211 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
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