{"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"}}}}