CVE-2026-52928

In the Linux kernel, the following vulnerability has been resolved: af_unix: Reject SIOCATMARK on non-stream sockets SIOCATMARK reports whether the receive queue is at the urgent mark for MSG_OOB. In AF_UNIX, MSG_OOB is supported only for SOCK_STREAM sockets. SOCK_DGRAM and SOCK_SEQPACKET reject MSG_OOB in sendmsg() and recvmsg(), so they should not support SIOCATMARK either. Return -EOPNOTSUPP for non-stream sockets before checking the receive queue.

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/3147ddf5a41c20c45c2eb69e00b62f10f822056a	Patch
https://git.kernel.org/stable/c/645b1ed3259af38b7814242a420bc2081bdd1eb6	Patch
https://git.kernel.org/stable/c/b741c9c6ef59f17c1f104ddf1217ef77f79ed29b	Patch
https://git.kernel.org/stable/c/c34c41446acf6c0d13b5b06c809be11e0f7f2729	Patch
https://git.kernel.org/stable/c/d119775f2bad827edc28071c061fdd4a91f889a5	Patch
https://git.kernel.org/stable/c/ec123873fdc83e7244c8ed6d17b8f8ea6c416a67	Patch
https://git.kernel.org/stable/c/f085971de6d6b8ef946a5e0bcd73ff24509a0f85	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:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::

History

No history.

Information

Published : 2026-06-24 08:16

Updated : 2026-07-08 15:28

NVD link : CVE-2026-52928

Mitre link : CVE-2026-52928

CVE.ORG link : CVE-2026-52928

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2026-52928", "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": "314001f0bf927015e459c9d387d62a231fe93af3", "lessThan": "ec123873fdc83e7244c8ed6d17b8f8ea6c416a67", "versionType": "git"}, {"status": "affected", "version": "314001f0bf927015e459c9d387d62a231fe93af3", "lessThan": "f085971de6d6b8ef946a5e0bcd73ff24509a0f85", "versionType": "git"}, {"status": "affected", "version": "314001f0bf927015e459c9d387d62a231fe93af3", "lessThan": "b741c9c6ef59f17c1f104ddf1217ef77f79ed29b", "versionType": "git"}, {"status": "affected", "version": "314001f0bf927015e459c9d387d62a231fe93af3", "lessThan": "645b1ed3259af38b7814242a420bc2081bdd1eb6", "versionType": "git"}, {"status": "affected", "version": "314001f0bf927015e459c9d387d62a231fe93af3", "lessThan": "c34c41446acf6c0d13b5b06c809be11e0f7f2729", "versionType": "git"}, {"status": "affected", "version": "314001f0bf927015e459c9d387d62a231fe93af3", "lessThan": "3147ddf5a41c20c45c2eb69e00b62f10f822056a", "versionType": "git"}, {"status": "affected", "version": "314001f0bf927015e459c9d387d62a231fe93af3", "lessThan": "d119775f2bad827edc28071c061fdd4a91f889a5", "versionType": "git"}], "programFiles": ["net/unix/af_unix.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"status": "unaffected", "version": "0", "lessThan": "5.15", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.211", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.177", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.144", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.88", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.30", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.7", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/unix/af_unix.c"], "defaultStatus": "affected"}]}], "published": "2026-06-24T08:16:22.937", "references": [{"url": "https://git.kernel.org/stable/c/3147ddf5a41c20c45c2eb69e00b62f10f822056a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/645b1ed3259af38b7814242a420bc2081bdd1eb6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b741c9c6ef59f17c1f104ddf1217ef77f79ed29b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c34c41446acf6c0d13b5b06c809be11e0f7f2729", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d119775f2bad827edc28071c061fdd4a91f889a5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ec123873fdc83e7244c8ed6d17b8f8ea6c416a67", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f085971de6d6b8ef946a5e0bcd73ff24509a0f85", "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\naf_unix: Reject SIOCATMARK on non-stream sockets\n\nSIOCATMARK reports whether the receive queue is at the urgent mark for\nMSG_OOB.\n\nIn AF_UNIX, MSG_OOB is supported only for SOCK_STREAM sockets.\nSOCK_DGRAM and SOCK_SEQPACKET reject MSG_OOB in sendmsg() and recvmsg(),\nso they should not support SIOCATMARK either.\n\nReturn -EOPNOTSUPP for non-stream sockets before checking the receive\nqueue."}], "lastModified": "2026-07-08T15:28:47.317", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "43D10312-92C4-46B5-814B-F619CB272440", "versionEndExcluding": "5.15.211", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "333C9E30-7FD4-46A2-94EF-C1AA1F3EE28B", "versionEndExcluding": "6.1.177", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C8AD3BC8-C843-423C-B9DB-CB52F67F578E", "versionEndExcluding": "6.6.144", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5AFBE0EC-CCDF-4207-AE92-ABF958125CA4", "versionEndExcluding": "6.12.88", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF39AE08-AE6D-4410-8FBE-76F6BF5BF55B", "versionEndExcluding": "6.18.30", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D0893CA7-9AE6-4DFE-AC75-48967D73AD8E", "versionEndExcluding": "7.0.7", "versionStartIncluding": "6.19"}, {"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"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}