{"id":"CVE-2026-72339","revision":"2ae25ca86e084c74aec3d3e45dc8a017","records":[{"revision":"2ae25ca86e084c74aec3d3e45dc8a017","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72339","aliases":[],"title":"qede: fix off-by-one in BD ring consumption on build_skb failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nqede: fix off-by-one in BD ring consumption on build_skb failure\n\nqede_rx_build_skb() and qede_tpa_rx_build_skb() do not check for a\nNULL return from qede_build_skb(). When it returns NULL under memory\npressure, the functions still consume a BD from the ring before\nreturning NULL. The callers then recycle additional BDs, resulting in\none extra BD being consumed (off-by-one). This desynchronizes the BD\nring, which can corrupt DMA page reference counts and lead to SLUB\nfreelist corruption.\n\nCommit 4e910dbe3650 (\"qede: confirm skb is allocated before using\")\nadded a NULL check inside qede_build_skb() to prevent a NULL pointer\ndereference, but did not address the missing NULL checks in the\ncallers, making this off-by-one reachable.\n\nFix this by adding NULL checks for the return value of\nqede_build_skb() in both qede_rx_build_skb() and\nqede_tpa_rx_build_skb(), returning NULL immediately before any BD ring\nmanipulation.","state":0,"publishedAt":"2026-08-15T05:55:46.48+00:00","modifiedAt":"2026-10-16T18:55:18.961+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/qlogic/qede/qede_fp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8a8633978b842c88fbcfe00d4e5dde96048f630e\",\n                            \"lessThan\": \"ecc05d4b20220a09c9c69584fc46ca55248a374a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a8633978b842c88fbcfe00d4e5dde96048f630e\",\n                            \"lessThan\": \"07be8b8adf91b7ada4c3dacce064d572a6066421\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a8633978b842c88fbcfe00d4e5dde96048f630e\",\n                            \"lessThan\": \"1624aa100c0b218181aa74e3696a389b509298cb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a8633978b842c88fbcfe00d4e5dde96048f630e\",\n                            \"lessThan\": \"0bf78df2d3ecb1f4964ff42a7327d25845955153\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a8633978b842c88fbcfe00d4e5dde96048f630e\",\n                            \"lessThan\": \"814a5edac8c9fc04051808d5faaa93768e989281\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a8633978b842c88fbcfe00d4e5dde96048f630e\",\n                            \"lessThan\": \"b066420e57f3402a52c998678b4678252ac9bb63\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a8633978b842c88fbcfe00d4e5dde96048f630e\",\n                            \"lessThan\": \"982d6d6bc059c5dff37a2201c2f08c14bcfcbd20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a8633978b842c88fbcfe00d4e5dde96048f630e\",\n                            \"lessThan\": \"a0a558ca7e75b49e71f8c545c30e8c005e6e4e2f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/qlogic/qede/qede_fp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.261\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.212\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.178\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.97\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/ecc05d4b20220a09c9c69584fc46ca55248a374a","https://git.kernel.org/stable/c/07be8b8adf91b7ada4c3dacce064d572a6066421","https://git.kernel.org/stable/c/1624aa100c0b218181aa74e3696a389b509298cb","https://git.kernel.org/stable/c/0bf78df2d3ecb1f4964ff42a7327d25845955153","https://git.kernel.org/stable/c/814a5edac8c9fc04051808d5faaa93768e989281","https://git.kernel.org/stable/c/b066420e57f3402a52c998678b4678252ac9bb63","https://git.kernel.org/stable/c/982d6d6bc059c5dff37a2201c2f08c14bcfcbd20","https://git.kernel.org/stable/c/a0a558ca7e75b49e71f8c545c30e8c005e6e4e2f"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72339","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72339","identifiers":["CVE-2026-72339"]},"retained":false,"historicalAffected":[]}],"coverage":[]}