CVE-2026-52932

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52932", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.369Z", "datePublished": "2026-06-24T07:14:24.002Z", "dateUpdated": "2026-08-05T12:31:50.048Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:31:50.048Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: ipcomp: Free destination pages on acomp errors\n\nMove the out_free_req label up by a couple of lines so that the\nallocated dst SG list gets freed on error as well as success."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - Inbound IPComp packets are handled by the IPv4/IPv6 protocol handlers and dispatched through xfrm_input() to ipcomp_input() when they match an installed IPComp SA. A remote peer can send malformed IPComp payloads to a reasonably deployed IPsec/IPComp endpoint.\nAC:L - The attacker only needs to send packets with invalid or oversized compressed data that make crypto_acomp_decompress() return an error after destination pages are allocated. There is no race or memory-layout prerequisite beyond reaching a configured IPComp SA.\nPR:N - On the remote receive path, no local privileges or authenticated user account are required; packets are processed before any per-user credential check. SA configuration is a deployment precondition, not an attacker privilege.\nUI:N - No victim user action is required after the target is running with an inbound IPComp SA. The attacker can repeatedly trigger the error path by sending network packets.\nS:U - The vulnerability consumes kernel memory within the same operating-system security authority. It does not cross a VM, hypervisor, IOMMU, or separate security-scope boundary.\nC:N - The bug leaks caller-allocated destination pages on the error path but does not expose their contents to the attacker. No arbitrary read or information disclosure primitive was found.\nI:N - The missed cleanup is a memory/resource leak, not a use-after-free, out-of-bounds write, or control-flow corruption. It does not provide a data modification primitive.\nA:H - Each failed IPComp decompression can leak multiple kernel pages, and a remote attacker can repeat this to exhaust kernel memory and cause system-wide denial of service. Under the required higher-severity rule, this is scored as high availability impact."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/xfrm/xfrm_ipcomp.c"], "versions": [{"version": "eb2953d26971f3083bbf95de4bc997b5bedf0b6e", "lessThan": "dc6dcba80d72a27ab61831ad3d253316e0c9b9d5", "status": "affected", "versionType": "git"}, {"version": "eb2953d26971f3083bbf95de4bc997b5bedf0b6e", "lessThan": "b30aa173c3809f6af4c83a86099be1be19aa48eb", "status": "affected", "versionType": "git"}, {"version": "eb2953d26971f3083bbf95de4bc997b5bedf0b6e", "lessThan": "7dbac7680eb629b3b4dc7e98c34f943b8814c0c8", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/xfrm/xfrm_ipcomp.c"], "versions": [{"version": "6.15", "status": "affected"}, {"version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "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": "6.15", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/dc6dcba80d72a27ab61831ad3d253316e0c9b9d5"}, {"url": "https://git.kernel.org/stable/c/b30aa173c3809f6af4c83a86099be1be19aa48eb"}, {"url": "https://git.kernel.org/stable/c/7dbac7680eb629b3b4dc7e98c34f943b8814c0c8"}], "title": "xfrm: ipcomp: Free destination pages on acomp errors", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/xfrm/xfrm_ipcomp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "dc6dcba80d72a27ab61831ad3d253316e0c9b9d5", "status": "affected", "version": "eb2953d26971f3083bbf95de4bc997b5bedf0b6e", "versionType": "git"}, {"lessThan": "b30aa173c3809f6af4c83a86099be1be19aa48eb", "status": "affected", "version": "eb2953d26971f3083bbf95de4bc997b5bedf0b6e", "versionType": "git"}, {"lessThan": "7dbac7680eb629b3b4dc7e98c34f943b8814c0c8", "status": "affected", "version": "eb2953d26971f3083bbf95de4bc997b5bedf0b6e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/xfrm/xfrm_ipcomp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"lessThan": "6.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.35", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.12", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "264F6745-E680-4AA9-A01E-4F9E3E10F604", "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9161A938-0FA8-44BC-95FE-C5A271601AB3", "versionEndExcluding": "7.0.12", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: ipcomp: Free destination pages on acomp errors\n\nMove the out_free_req label up by a couple of lines so that the\nallocated dst SG list gets freed on error as well as success."}], "id": "CVE-2026-52932", "lastModified": "2026-07-08T15:28:06.697", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-06-24T08:16:23.390", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7dbac7680eb629b3b4dc7e98c34f943b8814c0c8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b30aa173c3809f6af4c83a86099be1be19aa48eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dc6dcba80d72a27ab61831ad3d253316e0c9b9d5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: xfrm: ipcomp: Free destination pages on acomp errors", "id": "2492087", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492087"}, "csaw": false, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's xfrm IPcomp (IP Payload Compression Protocol) component. This vulnerability involves improper memory deallocation during error handling, where allocated resources are not correctly freed. This could allow a local attacker to cause resource exhaustion, potentially leading to a Denial of Service (DoS) on the system."], "name": "CVE-2026-52932", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-52932\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-52932\nhttps://lore.kernel.org/linux-cve-announce/2026062433-CVE-2026-52932-11a5@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[eb2953d26971f3083bbf95de4bc997b5bedf0b6e,dc6dcba80d72a27ab61831ad3d253316e0c9b9d5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[eb2953d26971f3083bbf95de4bc997b5bedf0b6e,b30aa173c3809f6af4c83a86099be1be19aa48eb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[eb2953d26971f3083bbf95de4bc997b5bedf0b6e,7dbac7680eb629b3b4dc7e98c34f943b8814c0c8)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.15"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.15)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.35,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.12,7.0.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-24T11:15:03.925538+00:00", "updated": "2026-08-12T05:30:17.338025+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}