{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-49703","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-02-26T02:21:30.443Z","datePublished":"2025-02-26T02:24:22.700Z","dateUpdated":"2025-10-01T19:36:45.750Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:43:36.625Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ibmvfc: Store vhost pointer during subcrq allocation\n\nCurrently the back pointer from a queue to the vhost adapter isn't set\nuntil after subcrq interrupt registration. The value is available when a\nqueue is first allocated and can/should be also set for primary and async\nqueues as well as subcrqs.\n\nThis fixes a crash observed during kexec/kdump on Power 9 with legacy XICS\ninterrupt controller where a pending subcrq interrupt from the previous\nkernel can be replayed immediately upon IRQ registration resulting in\ndereference of a garbage backpointer in ibmvfc_interrupt_scsi().\n\nKernel attempted to read user page (58) - exploit attempt? (uid: 0)\nBUG: Kernel NULL pointer dereference on read at 0x00000058\nFaulting instruction address: 0xc008000003216a08\nOops: Kernel access of bad area, sig: 11 [#1]\n...\nNIP [c008000003216a08] ibmvfc_interrupt_scsi+0x40/0xb0 [ibmvfc]\nLR [c0000000082079e8] __handle_irq_event_percpu+0x98/0x270\nCall Trace:\n[c000000047fa3d80] [c0000000123e6180] 0xc0000000123e6180 (unreliable)\n[c000000047fa3df0] [c0000000082079e8] __handle_irq_event_percpu+0x98/0x270\n[c000000047fa3ea0] [c000000008207d18] handle_irq_event+0x98/0x188\n[c000000047fa3ef0] [c00000000820f564] handle_fasteoi_irq+0xc4/0x310\n[c000000047fa3f40] [c000000008205c60] generic_handle_irq+0x50/0x80\n[c000000047fa3f60] [c000000008015c40] __do_irq+0x70/0x1a0\n[c000000047fa3f90] [c000000008016d7c] __do_IRQ+0x9c/0x130\n[c000000014622f60] [0000000020000000] 0x20000000\n[c000000014622ff0] [c000000008016e50] do_IRQ+0x40/0xa0\n[c000000014623020] [c000000008017044] replay_soft_interrupts+0x194/0x2f0\n[c000000014623210] [c0000000080172a8] arch_local_irq_restore+0x108/0x170\n[c000000014623240] [c000000008eb1008] _raw_spin_unlock_irqrestore+0x58/0xb0\n[c000000014623270] [c00000000820b12c] __setup_irq+0x49c/0x9f0\n[c000000014623310] [c00000000820b7c0] request_threaded_irq+0x140/0x230\n[c000000014623380] [c008000003212a50] ibmvfc_register_scsi_channel+0x1e8/0x2f0 [ibmvfc]\n[c000000014623450] [c008000003213d1c] ibmvfc_init_sub_crqs+0xc4/0x1f0 [ibmvfc]\n[c0000000146234d0] [c0080000032145a8] ibmvfc_reset_crq+0x150/0x210 [ibmvfc]\n[c000000014623550] [c0080000032147c8] ibmvfc_init_crq+0x160/0x280 [ibmvfc]\n[c0000000146235f0] [c00800000321a9cc] ibmvfc_probe+0x2a4/0x530 [ibmvfc]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/ibmvscsi/ibmvfc.c","drivers/scsi/ibmvscsi/ibmvfc.h"],"versions":[{"version":"3034ebe26389740bb6b4a463e05afb51dc93c336","lessThan":"8540f66196ca35b7b5e902932571c18b9fde0cd1","status":"affected","versionType":"git"},{"version":"3034ebe26389740bb6b4a463e05afb51dc93c336","lessThan":"6d38e3b614ded59da8b95377a98df969a5a5627a","status":"affected","versionType":"git"},{"version":"3034ebe26389740bb6b4a463e05afb51dc93c336","lessThan":"aeaadcde1a60138bceb65de3cdaeec78170b4459","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/ibmvscsi/ibmvfc.c","drivers/scsi/ibmvscsi/ibmvfc.h"],"versions":[{"version":"5.12","status":"affected"},{"version":"0","lessThan":"5.12","status":"unaffected","versionType":"semver"},{"version":"5.15.51","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.18.8","lessThanOrEqual":"5.18.*","status":"unaffected","versionType":"semver"},{"version":"5.19","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.15.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.18.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/8540f66196ca35b7b5e902932571c18b9fde0cd1"},{"url":"https://git.kernel.org/stable/c/6d38e3b614ded59da8b95377a98df969a5a5627a"},{"url":"https://git.kernel.org/stable/c/aeaadcde1a60138bceb65de3cdaeec78170b4459"}],"title":"scsi: ibmvfc: Store vhost pointer during subcrq allocation","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-49703","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:32:39.217289Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-476","description":"CWE-476 NULL Pointer Dereference"}]}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T19:36:45.750Z"}}]}}