CVE-2024-26742: scsi: smartpqi: Fix disable_managed_interrupts
In the Linux kernel, the following vulnerability has been resolved:
scsi: smartpqi: Fix disablemanagedinterrupts
Correct blk-mq registration issue with module parameter disablemanagedinterrupts enabled.
When we turn off the default PCIIRQAFFINITY flag, the driver needs to register with blk-mq using blkmqmapqueues(). The driver is currently calling blkmqpcimapqueues() which results in a stack trace and possibly undefined behavior.
Stack Trace: [ 7.860089] scsi host2: smartpqi [ 7.871934] WARNING: CPU: 0 PID: 238 at block/blk-mq-pci.c:52 blkmqpcimapqueues+0xca/0xd0 [ 7.889231] Modules linked in: sdmod t10pi sg uas smartpqi(+) crc32cintel scsitransportsas usbstorage dmmirror dmregionhash dmlog dmmod ipmidevintf ipmimsghandler fuse [ 7.924755] CPU: 0 PID: 238 Comm: kworker/0:3 Not tainted 4.18.0-372.88.1.el86smartpqitest.x8664 #1 [ 7.944336] Hardware name: HPE ProLiant DL380 Gen10/ProLiant DL380 Gen10, BIOS U30 03/08/2022 [ 7.963026] Workqueue: events workforcpufn [ 7.978275] RIP: 0010:blkmqpcimapqueues+0xca/0xd0 [ 7.978278] Code: 48 89 de 89 c7 e8 f6 0f 4f 00 3b 05 c4 b7 8e 01 72 e1 5b 31 c0 5d 41 5c 41 5d 41 5e 41 5f e9 7d df 73 00 31 c0 e9 76 df 73 00 <0f> 0b eb bc 90 90 0f 1f 44 00 00 41 57 49 89 ff 41 56 41 55 41 54 [ 7.978280] RSP: 0018:ffffa95fc3707d50 EFLAGS: 00010216 [ 7.978283] RAX: 00000000ffffffff RBX: 0000000000000000 RCX: 0000000000000010 [ 7.978284] RDX: 0000000000000004 RSI: 0000000000000000 RDI: ffff9190c32d4310 [ 7.978286] RBP: 0000000000000000 R08: ffffa95fc3707d38 R09: ffff91929b81ac00 [ 7.978287] R10: 0000000000000001 R11: ffffa95fc3707ac0 R12: 0000000000000000 [ 7.978288] R13: ffff9190c32d4000 R14: 00000000ffffffff R15: ffff9190c4c950a8 [ 7.978290] FS: 0000000000000000(0000) GS:ffff9193efc00000(0000) knlGS:0000000000000000 [ 7.978292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.172814] CR2: 000055d11166c000 CR3: 00000002dae10002 CR4: 00000000007706f0 [ 8.172816] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 8.172817] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 8.172818] PKRU: 55555554 [ 8.172819] Call Trace: [ 8.172823] blkmqalloctagset+0x12e/0x310 [ 8.264339] scsiaddhostwithdma.cold.9+0x30/0x245 [ 8.279302] pqictrlinit+0xacf/0xc8e [smartpqi] [ 8.294085] ? pqipciprobe+0x480/0x4c8 [smartpqi] [ 8.309015] pqipciprobe+0x480/0x4c8 [smartpqi] [ 8.323286] localpciprobe+0x42/0x80 [ 8.337855] workforcpufn+0x16/0x20 [ 8.351193] processonework+0x1a7/0x360 [ 8.364462] ? createworker+0x1a0/0x1a0 [ 8.379252] workerthread+0x1ce/0x390 [ 8.392623] ? createworker+0x1a0/0x1a0 [ 8.406295] kthread+0x10a/0x120 [ 8.418428] ? setkthreadstruct+0x50/0x50 [ 8.431532] retfromfork+0x1f/0x40 [ 8.444137] ---[ end trace 1bf0173d39354506 ]---
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.82-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.7.7-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1 - Upgrade
Upgrade
ubuntu/linux-raspi-realtimeto a version that resolves this vulnerability.Fixed in 6.8.0-2002.2 - Configuration
When the disable_managed_interrupts module parameter is enabled and the default PCI_IRQ_AFFINITY flag is turned off, register blk-mq using blk_mq_map_queues() instead of blk_mq_pci_map_queues().
Linux kernel smartpqi driver blk-mq queue mapping when PCI_IRQ_AFFINITY is disabled = blk_mq_map_queues()
Event History
Frequently Asked Questions
What is the severity of CVE-2024-26742?
CVE-2024-26742 is considered to have a moderate severity level due to potential impacts on system stability and performance.
How do I fix CVE-2024-26742?
To fix CVE-2024-26742, update your Linux kernel to a version that includes the fix, specifically versions after the patches are applied.
Which Linux kernel versions are affected by CVE-2024-26742?
CVE-2024-26742 affects Linux kernel versions from 6.0 to less than 6.1.80 and from 6.2 to less than 6.6.19, as well as specific release candidates.
What component is impacted by CVE-2024-26742?
CVE-2024-26742 impacts the SCSI driver, specifically the smartpqi module within the Linux kernel.
Can CVE-2024-26742 lead to system crashes?
Yes, if exploited, CVE-2024-26742 has the potential to affect system stability, which could lead to crashes.