{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43157", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.990Z", "datePublished": "2026-05-06T11:27:37.185Z", "dateUpdated": "2026-05-06T11:27:37.185Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-06T11:27:37.185Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: CGX: fix bitmap leaks\n\nThe RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap)\nare allocated by cgx_lmac_init() but never freed in cgx_lmac_exit().\nUnbinding and rebinding the driver therefore triggers kmemleak:\n\n unreferenced object (size 16):\n backtrace:\n rvu_alloc_bitmap\n cgx_probe\n\nFree both bitmaps during teardown."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/cgx.c"], "versions": [{"version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "ad8a13a45c5c24d0d32de9a1c3fd58498a675ece", "status": "affected", "versionType": "git"}, {"version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "013ac469596a0b8671e62d89c89ae0bd46bbe667", "status": "affected", "versionType": "git"}, {"version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "ccef79af58b43787c25710c9da96651c6ddfe50f", "status": "affected", "versionType": "git"}, {"version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "6d389382ee655128056fbdab86baad8495ffbf33", "status": "affected", "versionType": "git"}, {"version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "ccca14bbdcc25829d355b9f4d3249f43dadb71c1", "status": "affected", "versionType": "git"}, {"version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "3def995c4ede842adf509c410e92d09a0cedc965", "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/marvell/octeontx2/af/cgx.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.165", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.128", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.75", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.16", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.6", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "5.18", "versionEndExcluding": "6.1.165"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.6.128"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12.75"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.18.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.19.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ad8a13a45c5c24d0d32de9a1c3fd58498a675ece"}, {"url": "https://git.kernel.org/stable/c/013ac469596a0b8671e62d89c89ae0bd46bbe667"}, {"url": "https://git.kernel.org/stable/c/ccef79af58b43787c25710c9da96651c6ddfe50f"}, {"url": "https://git.kernel.org/stable/c/6d389382ee655128056fbdab86baad8495ffbf33"}, {"url": "https://git.kernel.org/stable/c/ccca14bbdcc25829d355b9f4d3249f43dadb71c1"}, {"url": "https://git.kernel.org/stable/c/3def995c4ede842adf509c410e92d09a0cedc965"}], "title": "octeontx2-af: CGX: fix bitmap leaks", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: CGX: fix bitmap leaks\n\nThe RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap)\nare allocated by cgx_lmac_init() but never freed in cgx_lmac_exit().\nUnbinding and rebinding the driver therefore triggers kmemleak:\n\n unreferenced object (size 16):\n backtrace:\n rvu_alloc_bitmap\n cgx_probe\n\nFree both bitmaps during teardown."}], "id": "CVE-2026-43157", "lastModified": "2026-05-06T13:07:51.607", "metrics": {}, "published": "2026-05-06T12:16:33.563", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/013ac469596a0b8671e62d89c89ae0bd46bbe667"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3def995c4ede842adf509c410e92d09a0cedc965"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6d389382ee655128056fbdab86baad8495ffbf33"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ad8a13a45c5c24d0d32de9a1c3fd58498a675ece"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ccca14bbdcc25829d355b9f4d3249f43dadb71c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ccef79af58b43787c25710c9da96651c6ddfe50f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: octeontx2-af: CGX: fix bitmap leaks", "id": "2467155", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467155"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's octeontx2-af CGX driver. This vulnerability occurs because RX/TX flow-control bitmaps are allocated during initialization but are not properly freed when the driver is unbound and rebound. A local attacker could repeatedly unbind and rebind the driver, leading to a kernel memory leak (kmemleak). Over time, this could result in resource exhaustion and potentially impact system stability."], "name": "CVE-2026-43157", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43157\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43157\nhttps://lore.kernel.org/linux-cve-announce/2026050630-CVE-2026-43157-b4de@gregkh/T"], "threat_severity": "Moderate"}