{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-53088", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.384Z", "datePublished": "2026-06-24T16:30:27.655Z", "dateUpdated": "2026-08-05T12:33:16.590Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:33:16.590Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmgenet: fix off-by-one in bcmgenet_put_txcb\n\nThe write_ptr points to the next open tx_cb. We want to return the\ntx_cb that gets rewinded, so we must rewind the pointer first then\nreturn the tx_cb that it points to. That way the txcb can be correctly\ncleaned up." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL" }, "scenarios": [ { "lang": "en", "value": "AV:N - The vulnerable path is the bcmgenet Ethernet transmit path, reachable when a network-facing embedded/router system sends replies or forwards attacker-supplied traffic through the affected interface.\nAC:L - The off-by-one cleanup is deterministic once the transmit error/reclaim path is reached, and an attacker can repeatedly drive transmit activity and resource pressure without needing to win an uncontrolled race.\nPR:N - No authentication or local account is required in the highest-impact network-facing deployment, because unauthenticated network traffic can cause packets to be transmitted through the driver.\nUI:N - Exploitation does not require a victim user to open a file, mount media, or perform any other interactive action.\nS:U - The impact remains within the kernel and the affected host's networking/DMA resources, without crossing a separate security authority such as a VM boundary.\nC:H - The wrong transmit control block can leave stale skb/DMA metadata and later operate on dangling kernel objects, making kernel memory disclosure a defensible worst-case outcome.\nI:H - The stale control-block cleanup can plausibly become double-free or use-after-free style kernel heap corruption, which is treated as high integrity impact.\nA:H - Even without full exploitation, incorrect cleanup of transmit control blocks and DMA mappings can corrupt driver state, leak resources, or crash/hang networking/kernel execution." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/broadcom/genet/bcmgenet.c" ], "versions": [ { "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636", "lessThan": "14e9f86564fff7bcf7f45c1b69080e837b31d185", "status": "affected", "versionType": "git" }, { "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636", "lessThan": "fb9a3c1f547d0ff024dbfe7b6f327626ddf0a3de", "status": "affected", "versionType": "git" }, { "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636", "lessThan": "85f34ec320d3881badfd4edc5fee5cd5012bb54d", "status": "affected", "versionType": "git" }, { "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636", "lessThan": "2a74590170427a3ca7cc4bb8690cdd559129c29c", "status": "affected", "versionType": "git" }, { "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636", "lessThan": "29394f722f620281f2ee9a47f947734e53d72c90", "status": "affected", "versionType": "git" }, { "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636", "lessThan": "4cab761fc51c65aef741fcece4a18f3554edbc09", "status": "affected", "versionType": "git" }, { "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636", "lessThan": "72df896e31ddd06fcc5a789f025ad7a62a18bc9b", "status": "affected", "versionType": "git" }, { "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636", "lessThan": "57f3f53d2c9c5a9e133596e2f7bc1c50688a6d38", "status": "affected", "versionType": "git" }, { "version": "3bdf77194ea822390b405639b77659071fd2c2e9", "status": "affected", "versionType": "git" }, { "version": "3.16.50", "lessThan": "3.17", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/broadcom/genet/bcmgenet.c" ], "versions": [ { "version": "4.13", "status": "affected" }, { "version": "0", "lessThan": "4.13", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "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": "4.13", "versionEndExcluding": "5.10.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.6.141" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.12.91" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.18.33" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "7.0.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "7.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16.50" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/14e9f86564fff7bcf7f45c1b69080e837b31d185" }, { "url": "https://git.kernel.org/stable/c/fb9a3c1f547d0ff024dbfe7b6f327626ddf0a3de" }, { "url": "https://git.kernel.org/stable/c/85f34ec320d3881badfd4edc5fee5cd5012bb54d" }, { "url": "https://git.kernel.org/stable/c/2a74590170427a3ca7cc4bb8690cdd559129c29c" }, { "url": "https://git.kernel.org/stable/c/29394f722f620281f2ee9a47f947734e53d72c90" }, { "url": "https://git.kernel.org/stable/c/4cab761fc51c65aef741fcece4a18f3554edbc09" }, { "url": "https://git.kernel.org/stable/c/72df896e31ddd06fcc5a789f025ad7a62a18bc9b" }, { "url": "https://git.kernel.org/stable/c/57f3f53d2c9c5a9e133596e2f7bc1c50688a6d38" } ], "title": "net: bcmgenet: fix off-by-one in bcmgenet_put_txcb", "x_generator": { "engine": "bippy-1.2.0" } } } }