CVE-2022-49703
published 2025-02-26CVE-2022-49703: In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Store vhost pointer during subcrq allocation Currently the back pointer from…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.26%
17.7th percentile
In the Linux kernel, the following vulnerability has been resolved:
scsi: ibmvfc: Store vhost pointer during subcrq allocation
Currently the back pointer from a queue to the vhost adapter isn't set
until after subcrq interrupt registration. The value is available when a
queue is first allocated and can/should be also set for primary and async
queues as well as subcrqs.
This fixes a crash observed during kexec/kdump on Power 9 with legacy XICS
interrupt controller where a pending subcrq interrupt from the previous
kernel can be replayed immediately upon IRQ registration resulting in
dereference of a garbage backpointer in ibmvfc_interrupt_scsi().
Kernel attempted to read user page (58) - exploit attempt? (uid: 0)
BUG: Kernel NULL pointer dereference on read at 0x00000058
Faulting instruction address: 0xc008000003216a08
Oops: Kernel access of bad area, sig: 11 [#1]
...
NIP [c008000003216a08] ibmvfc_interrupt_scsi+0x40/0xb0 [ibmvfc]
LR [c0000000082079e8] __handle_irq_event_percpu+0x98/0x270
Call Trace:
[c000000047fa3d80] [c0000000123e6180] 0xc0000000123e6180 (unreliable)
[c000000047fa3df0] [c0000000082079e8] __handle_irq_event_percpu+0x98/0x270
[c000000047fa3ea0] [c000000008207d18] handle_irq_event+0x98/0x188
[c000000047fa3ef0] [c00000000820f564] handle_fasteoi_irq+0xc4/0x310
[c000000047fa3f40] [c000000008205c60] generic_handle_irq+0x50/0x80
[c000000047fa3f60] [c000000008015c40] __do_irq+0x70/0x1a0
[c000000047fa3f90] [c000000008016d7c] __do_IRQ+0x9c/0x130
[c000000014622f60] [0000000020000000] 0x20000000
[c000000014622ff0] [c000000008016e50] do_IRQ+0x40/0xa0
[c000000014623020] [c000000008017044] replay_soft_interrupts+0x194/0x2f0
[c000000014623210] [c0000000080172a8] arch_local_irq_restore+0x108/0x170
[c000000014623240] [c000000008eb1008] _raw_spin_unlock_irqrestore+0x58/0xb0
[c000000014623270] [c00000000820b12c] __setup_irq+0x49c/0x9f0
[c000000014623310] [c00000000820b7c0] request_threaded_irq+0x140/0x230
[c000000014623380] [c008000003212a50] ibmvfc_register_scsi_c
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.18.14-1 (bookworm) | linux 5.18.14-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 3034ebe26389740bb6b4a463e05afb51dc93c336 < 8540f66196ca35b7b5e902932571c18b9fde0cd1 | 8540f66196ca35b7b5e902932571c18b9fde0cd1 |
| linux | linux | >= 3034ebe26389740bb6b4a463e05afb51dc93c336 < 6d38e3b614ded59da8b95377a98df969a5a5627a | 6d38e3b614ded59da8b95377a98df969a5a5627a |
| linux | linux | >= 3034ebe26389740bb6b4a463e05afb51dc93c336 < aeaadcde1a60138bceb65de3cdaeec78170b4459 | aeaadcde1a60138bceb65de3cdaeec78170b4459 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 5.12 < 5.15.51 | 5.15.51 |
| linux | linux_kernel | >= 5.16 < 5.18.8 | 5.18.8 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
kernel: scsi: ibmvfc: Store vhost pointer during subcrq allocation
vendor_redhat·2025-02-26·CVSS 5.5
CVE-2022-49703 [MEDIUM] CWE-476 kernel: scsi: ibmvfc: Store vhost pointer during subcrq allocation
kernel: scsi: ibmvfc: Store vhost pointer during subcrq allocation
In the Linux kernel, the following vulnerability has been resolved:
scsi: ibmvfc: Store vhost pointer during subcrq allocation
Currently the back pointer from a queue to the vhost adapter isn't set
until after subcrq interrupt registration. The value is available when a
queue is first allocated and can/should be also set for primary and async
queues as well as subcrqs.
This fixes a crash observed during kexec/kdump on Power 9 with legacy XICS
interrupt controller where a pending subcrq interrupt from the previous
kernel can be replayed immediately upon IRQ registration resulting in
dereference of a garbage backpointer in ibmvfc_interrupt_scsi().
Kernel attempted to read user page (58) - exploit attempt? (uid: 0)
BUG: Kerne
Debian
CVE-2022-49703: linux - In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvf...
vendor_debian·2022·CVSS 5.5
CVE-2022-49703 [MEDIUM] CVE-2022-49703: linux - In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvf...
In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Store vhost pointer during subcrq allocation Currently the back pointer from a queue to the vhost adapter isn't set until after subcrq interrupt registration. The value is available when a queue is first allocated and can/should be also set for primary and async queues as well as subcrqs. This fixes a crash observed during kexec/kdump on Power 9 with legacy XICS interrupt controller where a pending subcrq interrupt from the previous kernel can be replayed immediately upon IRQ registration resulting in dereference of a garbage backpointer in ibmvfc_interrupt_scsi(). Kernel attempted to read user page (58) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000058 Faulting instructio
GHSA
GHSA-fx3x-j43m-j597: In the Linux kernel, the following vulnerability has been resolved:
scsi: ibmvfc: Store vhost pointer during subcrq allocation
Currently the back po
ghsa_unreviewed·2025-03-12
CVE-2022-49703 [MEDIUM] CWE-476 GHSA-fx3x-j43m-j597: In the Linux kernel, the following vulnerability has been resolved:
scsi: ibmvfc: Store vhost pointer during subcrq allocation
Currently the back po
In the Linux kernel, the following vulnerability has been resolved:
scsi: ibmvfc: Store vhost pointer during subcrq allocation
Currently the back pointer from a queue to the vhost adapter isn't set
until after subcrq interrupt registration. The value is available when a
queue is first allocated and can/should be also set for primary and async
queues as well as subcrqs.
This fixes a crash observed during kexec/kdump on Power 9 with legacy XICS
interrupt controller where a pending subcrq interrupt from the previous
kernel can be replayed immediately upon IRQ registration resulting in
dereference of a garbage backpointer in ibmvfc_interrupt_scsi().
Kernel attempted to read user page (58) - exploit attempt? (uid: 0)
BUG: Kernel NULL pointer dereference on read at 0x00000058
Faulting instru
OSV
CVE-2022-49703: In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Store vhost pointer during subcrq allocation Currently the back poin
osv·2025-02-26·CVSS 5.5
CVE-2022-49703 [MEDIUM] CVE-2022-49703: In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Store vhost pointer during subcrq allocation Currently the back poin
In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Store vhost pointer during subcrq allocation Currently the back pointer from a queue to the vhost adapter isn't set until after subcrq interrupt registration. The value is available when a queue is first allocated and can/should be also set for primary and async queues as well as subcrqs. This fixes a crash observed during kexec/kdump on Power 9 with legacy XICS interrupt controller where a pending subcrq interrupt from the previous kernel can be replayed immediately upon IRQ registration resulting in dereference of a garbage backpointer in ibmvfc_interrupt_scsi(). Kernel attempted to read user page (58) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000058 Faulting instructio
No detection rules found.
No public exploits indexed.
2025-02-26
Published