{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49084", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:49:39.248Z", "datePublished": "2025-02-26T01:54:43.099Z", "dateUpdated": "2026-08-05T08:53:47.633Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:53:47.633Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nqede: confirm skb is allocated before using\n\nqede_build_skb() assumes build_skb() always works and goes straight\nto skb_reserve(). However, build_skb() can fail under memory pressure.\nThis results in a kernel panic because the skb to reserve is NULL.\n\nAdd a check in case build_skb() failed to allocate and return NULL.\n\nThe NULL return is handled correctly in callers to qede_build_skb()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - qede is the QLogic/Marvell FastLinQ Ethernet NIC RX path (qede_msix_fp_int → NAPI qede_poll → qede_rx_int → qede_rx_process_cqe → qede_rx_build_skb → qede_build_skb), reached when frames arrive on internet-facing servers and cloud VFs; a remote peer triggers it by sending packets.\nAC:L - build_skb() uses GFP_ATOMIC and fails under atomic allocation pressure that a sustained packet flood readily creates, and frames larger than the 256-byte rx_copybreak (or TPA/GRO) deterministically take the vulnerable path; the attacker drives both reachability and the failure condition.\nPR:N - NIC receive and NAPI softirq processing run on every inbound frame with no authentication, capability check, or local account required.\nUI:N - Reception and NAPI polling proceed automatically whenever the qede interface is up; no victim action such as opening a file or mounting a filesystem is needed.\nS:U - The NULL dereference and resulting oops remain inside the host kernel that owns the qede driver; no VM escape, IOMMU bypass, or other cross-authority boundary is crossed.\nC:N - skb_reserve() on a NULL skb is a pure NULL pointer dereference of fixed struct offsets below mmap_min_addr with no OOB read, UAF reclaim, or other disclosure primitive.\nI:N - The fault stores through a NULL skb pointer and aborts immediately without modifying attacker-influenced kernel objects, so there is no write primitive or control-flow hijack.\nA:H - The NULL dereference in skb_reserve() causes a kernel oops/panic in softirq/NAPI context, which is a full availability impact under kernel CVSS guidance." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/qlogic/qede/qede_fp.c" ], "versions": [ { "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "9648adb1b3ece55c657d3a4f52bfee663b710dfe", "status": "affected", "versionType": "git" }, { "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "034a92c6a81048128fc7b18d278d52438a13902a", "status": "affected", "versionType": "git" }, { "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "8928239e5e2e460d95b8a0b89f61671625e7ece0", "status": "affected", "versionType": "git" }, { "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "c9bdce2359b5f4986eb38d1e81865b3586cc20d2", "status": "affected", "versionType": "git" }, { "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "b2d6b3db9d1cf80908964036dbe1c52a86b1afb1", "status": "affected", "versionType": "git" }, { "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "e1fd0c42acfa22bb34d2ab6a111484f466ab8093", "status": "affected", "versionType": "git" }, { "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "4e910dbe36508654a896d5735b318c0b88172570", "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/net/ethernet/qlogic/qede/qede_fp.c" ], "versions": [ { "version": "4.18", "status": "affected" }, { "version": "0", "lessThan": "4.18", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.238", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.189", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.111", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.34", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.16.20", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.3", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18", "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": "4.18", "versionEndExcluding": "4.19.238" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.4.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.10.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.15.34" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.16.20" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.17.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.18" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9648adb1b3ece55c657d3a4f52bfee663b710dfe" }, { "url": "https://git.kernel.org/stable/c/034a92c6a81048128fc7b18d278d52438a13902a" }, { "url": "https://git.kernel.org/stable/c/8928239e5e2e460d95b8a0b89f61671625e7ece0" }, { "url": "https://git.kernel.org/stable/c/c9bdce2359b5f4986eb38d1e81865b3586cc20d2" }, { "url": "https://git.kernel.org/stable/c/b2d6b3db9d1cf80908964036dbe1c52a86b1afb1" }, { "url": "https://git.kernel.org/stable/c/e1fd0c42acfa22bb34d2ab6a111484f466ab8093" }, { "url": "https://git.kernel.org/stable/c/4e910dbe36508654a896d5735b318c0b88172570" } ], "title": "qede: confirm skb is allocated before using", "x_generator": { "engine": "bippy-1.2.0" } } } }