CVE-2026-46231

In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: put backbone reference on failed claim hash insert When batadv_bla_add_claim() fails to insert a new claim into the hash, it leaked a reference to the backbone_gw for which the claim was intended. Call batadv_backbone_gw_put() on the error path to release the reference and avoid leaking the backbone_gw object.

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/0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0	Patch
https://git.kernel.org/stable/c/2888c9a154123db0254ae4fb9bea570c7e1f2e06	Patch
https://git.kernel.org/stable/c/65419eb4259a26a3cd3f56fa0e3b3c113bf8c256	Patch
https://git.kernel.org/stable/c/6c8b68a7ed667a63aa603ba4d3a7088be143007e	Patch
https://git.kernel.org/stable/c/769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14	Patch
https://git.kernel.org/stable/c/7cccf4eb4f96d3c3af91a00b7a9caa652439542e	Patch
https://git.kernel.org/stable/c/ba9d20ee9076dac32c371116bacbe72480eb356c	Patch
https://git.kernel.org/stable/c/fd0ca034c1e71ca7613cde9dd892836b2c2831bd	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::::::::
	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:4.7:-::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::

History

No history.

Information

Published : 2026-05-28 10:16

Updated : 2026-06-17 10:53

NVD link : CVE-2026-46231

Mitre link : CVE-2026-46231

CVE.ORG link : CVE-2026-46231

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2026-46231", "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": "3db0decf1185357d6ab2256d0dede1ca9efda03d", "lessThan": "6c8b68a7ed667a63aa603ba4d3a7088be143007e", "versionType": "git"}, {"status": "affected", "version": "3db0decf1185357d6ab2256d0dede1ca9efda03d", "lessThan": "769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14", "versionType": "git"}, {"status": "affected", "version": "3db0decf1185357d6ab2256d0dede1ca9efda03d", "lessThan": "2888c9a154123db0254ae4fb9bea570c7e1f2e06", "versionType": "git"}, {"status": "affected", "version": "3db0decf1185357d6ab2256d0dede1ca9efda03d", "lessThan": "65419eb4259a26a3cd3f56fa0e3b3c113bf8c256", "versionType": "git"}, {"status": "affected", "version": "3db0decf1185357d6ab2256d0dede1ca9efda03d", "lessThan": "fd0ca034c1e71ca7613cde9dd892836b2c2831bd", "versionType": "git"}, {"status": "affected", "version": "3db0decf1185357d6ab2256d0dede1ca9efda03d", "lessThan": "0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0", "versionType": "git"}, {"status": "affected", "version": "3db0decf1185357d6ab2256d0dede1ca9efda03d", "lessThan": "7cccf4eb4f96d3c3af91a00b7a9caa652439542e", "versionType": "git"}, {"status": "affected", "version": "3db0decf1185357d6ab2256d0dede1ca9efda03d", "lessThan": "ba9d20ee9076dac32c371116bacbe72480eb356c", "versionType": "git"}, {"status": "affected", "version": "3fdd337ac0b277a1f40aa73b35283520f426e517", "versionType": "git"}, {"status": "affected", "version": "485eedfabc2aefac8f09f98a82ba1c1e3e202a6d", "versionType": "git"}, {"status": "affected", "version": "3.16.39", "lessThan": "3.17", "versionType": "semver"}, {"status": "affected", "version": "4.4.217", "lessThan": "4.5", "versionType": "semver"}], "programFiles": ["net/batman-adv/bridge_loop_avoidance.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.7"}, {"status": "unaffected", "version": "0", "lessThan": "4.7", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.140", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.90", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.32", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.9", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/batman-adv/bridge_loop_avoidance.c"], "defaultStatus": "affected"}]}], "published": "2026-05-28T10:16:38.743", "references": [{"url": "https://git.kernel.org/stable/c/0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2888c9a154123db0254ae4fb9bea570c7e1f2e06", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/65419eb4259a26a3cd3f56fa0e3b3c113bf8c256", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6c8b68a7ed667a63aa603ba4d3a7088be143007e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7cccf4eb4f96d3c3af91a00b7a9caa652439542e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ba9d20ee9076dac32c371116bacbe72480eb356c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fd0ca034c1e71ca7613cde9dd892836b2c2831bd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: bla: put backbone reference on failed claim hash insert\n\nWhen batadv_bla_add_claim() fails to insert a new claim into the hash, it\nleaked a reference to the backbone_gw for which the claim was intended.\nCall batadv_backbone_gw_put() on the error path to release the reference\nand avoid leaking the backbone_gw object."}], "lastModified": "2026-06-17T10:53:22.670", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BA789D31-0F96-422B-81E8-27E5D87B93D0", "versionEndExcluding": "3.17", "versionStartIncluding": "3.16.39"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3E1D0738-1B7B-46CA-8991-C6C68E7CD03A", "versionEndExcluding": "4.5", "versionStartIncluding": "4.4.217"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3999300C-7B69-4D6B-8678-625E9591595F", "versionEndExcluding": "5.10.258", "versionStartIncluding": "4.7.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "919C10A9-7951-4A74-BADD-C135A0A8D8B4", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA", "versionEndExcluding": "6.1.175", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A1A92866-F406-43B5-B2D1-CFC274753E9D", "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3BAAA2BE-6EEC-45D5-AD66-50F63CA20483", "versionEndExcluding": "6.12.90", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CB9F1FA8-6D5E-42B1-9877-57BACFE5C886", "versionEndExcluding": "6.18.32", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "33ACA10B-B260-46EA-BD50-70EBE5097672", "versionEndExcluding": "7.0.9", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.7:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F890998-2B89-4DE8-BA87-5B3D9A5E8E11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}