{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-49701", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49701", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2025-02-26T02:24:21.358Z", "updatedAt": "2026-08-05T08:56:05.804Z", "importedAt": "2026-10-24T01:56:49.724Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "scsi: ibmvfc: Allocate/free queue resource only during probe/remove", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ibmvfc: Allocate/free queue resource only during probe/remove\n\nCurrently, the sub-queues and event pool resources are allocated/freed for\nevery CRQ connection event such as reset and LPM. This exposes the driver\nto a couple issues. First the inefficiency of freeing and reallocating\nmemory that can simply be resued after being sanitized. Further, a system\nunder memory pressue runs the risk of allocation failures that could result\nin a crippled driver. Finally, there is a race window where command\nsubmission/compeletion can try to pull/return elements from/to an event\npool that is being deleted or already has been deleted due to the lack of\nhost state around freeing/allocating resources. The following is an example\nof list corruption following a live partition migration (LPM):\n\nOops: Exception in kernel mode, sig: 5 [#1]\nLE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries\nModules linked in: vfat fat isofs cdrom ext4 mbcache jbd2 nft_counter nft_compat nf_tables nfnetlink rpadlpar_io rpaphp xsk_diag nfsv3 nfs_acl nfs lockd grace fscache netfs rfkill bonding tls sunrpc pseries_rng drm drm_panel_orientation_quirks xfs libcrc32c dm_service_time sd_mod t10_pi sg ibmvfc scsi_transport_fc ibmveth vmx_crypto dm_multipath dm_mirror dm_region_hash dm_log dm_mod ipmi_devintf ipmi_msghandler fuse\nCPU: 0 PID: 2108 Comm: ibmvfc_0 Kdump: loaded Not tainted 5.14.0-70.9.1.el9_0.ppc64le #1\nNIP: c0000000007c4bb0 LR: c0000000007c4bac CTR: 00000000005b9a10\nREGS: c00000025c10b760 TRAP: 0700 Not tainted (5.14.0-70.9.1.el9_0.ppc64le)\nMSR: 800000000282b033 CR: 2800028f XER: 0000000f\nCFAR: c0000000001f55bc IRQMASK: 0\n GPR00: c0000000007c4bac c00000025c10ba00 c000000002a47c00 000000000000004e\n GPR04: c0000031e3006f88 c0000031e308bd00 c00000025c10b768 0000000000000027\n GPR08: 0000000000000000 c0000031e3009dc0 00000031e0eb0000 0000000000000000\n GPR12: c0000031e2ffffa8 c000000002dd0000 c000000000187108 c00000020fcee2c0\n GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000\n GPR20: 0000000000000000 0000000000000000 0000000000000000 c008000002f81300\n GPR24: 5deadbeef0000100 5deadbeef0000122 c000000263ba6910 c00000024cc88000\n GPR28: 000000000000003c c0000002430a0000 c0000002430ac300 000000000000c300\nNIP [c0000000007c4bb0] __list_del_entry_valid+0x90/0x100\nLR [c0000000007c4bac] __list_del_entry_valid+0x8c/0x100\nCall Trace:\n[c00000025c10ba00] [c0000000007c4bac] __list_del_entry_valid+0x8c/0x100 (unreliable)\n[c00000025c10ba60] [c008000002f42284] ibmvfc_free_queue+0xec/0x210 [ibmvfc]\n[c00000025c10bb10] [c008000002f4246c] ibmvfc_deregister_scsi_channel+0xc4/0x160 [ibmvfc]\n[c00000025c10bba0] [c008000002f42580] ibmvfc_release_sub_crqs+0x78/0x130 [ibmvfc]\n[c00000025c10bc20] [c008000002f4f6cc] ibmvfc_do_work+0x5c4/0xc70 [ibmvfc]\n[c00000025c10bce0] [c008000002f4fdec] ibmvfc_work+0x74/0x1e8 [ibmvfc]\n[c00000025c10bda0] [c0000000001872b8] kthread+0x1b8/0x1c0\n[c00000025c10be10] [c00000000000cd64] ret_from_kernel_thread+0x5c/0x64\nInstruction dump:\n40820034 38600001 38210060 4e800020 7c0802a6 7c641b78 3c62fe7a 7d254b78\n3863b590 f8010070 4ba309cd 60000000 <0fe00000> 7c0802a6 3c62fe7a 3863b640\n---[ end trace 11a2b65a92f8b66c ]---\nibmvfc 30000003: Send warning. Receive queue closed, will retry.\n\nAdd registration/deregistration helpers that are called instead during\nconnection resets to sanitize and reconfigure the queues.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "3034ebe26389740bb6b4a463e05afb51dc93c336", "status": "affected", "versionType": "git", "lessThan": "161ec2a0807ddd58bc0f24f3e1e7e3d4fef5297f" }, { "version": "3034ebe26389740bb6b4a463e05afb51dc93c336", "status": "affected", "versionType": "git", "lessThan": "9f23c499ca601b2a1e1d2e761d03964b739bca0e" }, { "version": "3034ebe26389740bb6b4a463e05afb51dc93c336", "status": "affected", "versionType": "git", "lessThan": "72ea7fe0db73d65c7d977208842d8ade9b823de9" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.12", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.12" }, { "version": "5.15.51", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "5.18.8", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.18.*" }, { "version": "5.19", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }