CVE-2026-43157

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: CGX: fix bitmap leaks The RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap) are allocated by cgx_lmac_init() but never freed in cgx_lmac_exit(). Unbinding and rebinding the driver therefore triggers kmemleak: unreferenced object (size 16): backtrace: rvu_alloc_bitmap cgx_probe Free both bitmaps during teardown.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/013ac469596a0b8671e62d89c89ae0bd46bbe667	Patch
https://git.kernel.org/stable/c/3def995c4ede842adf509c410e92d09a0cedc965	Patch
https://git.kernel.org/stable/c/6d389382ee655128056fbdab86baad8495ffbf33	Patch
https://git.kernel.org/stable/c/ad8a13a45c5c24d0d32de9a1c3fd58498a675ece	Patch
https://git.kernel.org/stable/c/ccca14bbdcc25829d355b9f4d3249f43dadb71c1	Patch
https://git.kernel.org/stable/c/ccef79af58b43787c25710c9da96651c6ddfe50f	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2026-05-06 12:16

Updated : 2026-06-17 10:49

NVD link : CVE-2026-43157

Mitre link : CVE-2026-43157

CVE.ORG link : CVE-2026-43157

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

{"id": "CVE-2026-43157", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "ad8a13a45c5c24d0d32de9a1c3fd58498a675ece", "versionType": "git"}, {"status": "affected", "version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "013ac469596a0b8671e62d89c89ae0bd46bbe667", "versionType": "git"}, {"status": "affected", "version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "ccef79af58b43787c25710c9da96651c6ddfe50f", "versionType": "git"}, {"status": "affected", "version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "6d389382ee655128056fbdab86baad8495ffbf33", "versionType": "git"}, {"status": "affected", "version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "ccca14bbdcc25829d355b9f4d3249f43dadb71c1", "versionType": "git"}, {"status": "affected", "version": "e740003874edc13e468d19233f99787bedb4bb8e", "lessThan": "3def995c4ede842adf509c410e92d09a0cedc965", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/cgx.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.18"}, {"status": "unaffected", "version": "0", "lessThan": "5.18", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.165", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.128", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.75", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.16", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.6", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/cgx.c"], "defaultStatus": "affected"}]}], "published": "2026-05-06T12:16:33.563", "references": [{"url": "https://git.kernel.org/stable/c/013ac469596a0b8671e62d89c89ae0bd46bbe667", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3def995c4ede842adf509c410e92d09a0cedc965", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6d389382ee655128056fbdab86baad8495ffbf33", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ad8a13a45c5c24d0d32de9a1c3fd58498a675ece", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ccca14bbdcc25829d355b9f4d3249f43dadb71c1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ccef79af58b43787c25710c9da96651c6ddfe50f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}], "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."}], "lastModified": "2026-06-17T10:49:02.480", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3B9A8D13-BEFF-47C0-956C-415602FDDAAF", "versionEndExcluding": "6.1.165", "versionStartIncluding": "5.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2", "versionEndExcluding": "6.6.128", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2", "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}