{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31515", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.107Z", "datePublished": "2026-04-22T13:54:32.194Z", "dateUpdated": "2026-04-22T13:54:32.194Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-22T13:54:32.194Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_key: validate families in pfkey_send_migrate()\n\nsyzbot was able to trigger a crash in skb_put() [1]\n\nIssue is that pfkey_send_migrate() does not check old/new families,\nand that set_ipsecrequest() @family argument was truncated,\nthus possibly overfilling the skb.\n\nValidate families early, do not wait set_ipsecrequest().\n\n[1]\n\nskbuff: skb_over_panic: text:ffffffff8a752120 len:392 put:16 head:ffff88802a4ad040 data:ffff88802a4ad040 tail:0x188 end:0x180 dev:<NULL>\n kernel BUG at net/core/skbuff.c:214 !\nCall Trace:\n <TASK>\n skb_over_panic net/core/skbuff.c:219 [inline]\n skb_put+0x159/0x210 net/core/skbuff.c:2655\n skb_put_zero include/linux/skbuff.h:2788 [inline]\n set_ipsecrequest net/key/af_key.c:3532 [inline]\n pfkey_send_migrate+0x1270/0x2e50 net/key/af_key.c:3636\n km_migrate+0x155/0x260 net/xfrm/xfrm_state.c:2848\n xfrm_migrate+0x2140/0x2450 net/xfrm/xfrm_policy.c:4705\n xfrm_do_migrate+0x8ff/0xaa0 net/xfrm/xfrm_user.c:3150"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/key/af_key.c"], "versions": [{"version": "08de61beab8a21c8e0b3906a97defda5f1f66ece", "lessThan": "d0c5aa8dd38887714f1aad04236a3620b56a5e4e", "status": "affected", "versionType": "git"}, {"version": "08de61beab8a21c8e0b3906a97defda5f1f66ece", "lessThan": "e06b596fc4eb01936a2e5dccad17c946d660bab8", "status": "affected", "versionType": "git"}, {"version": "08de61beab8a21c8e0b3906a97defda5f1f66ece", "lessThan": "8ddf8de7e758f6888988467af9ffc8adf589fb16", "status": "affected", "versionType": "git"}, {"version": "08de61beab8a21c8e0b3906a97defda5f1f66ece", "lessThan": "d3225e6b9bd51ec177970a628fe4b11237ce87d5", "status": "affected", "versionType": "git"}, {"version": "08de61beab8a21c8e0b3906a97defda5f1f66ece", "lessThan": "7b18692c59afb8e5c364c8e3ac01e51dd6b52028", "status": "affected", "versionType": "git"}, {"version": "08de61beab8a21c8e0b3906a97defda5f1f66ece", "lessThan": "83f644ea92987c100b82d8481ae2230faeed3d34", "status": "affected", "versionType": "git"}, {"version": "08de61beab8a21c8e0b3906a97defda5f1f66ece", "lessThan": "ee836e820a40e2ca4da8af7310bff92d586772d4", "status": "affected", "versionType": "git"}, {"version": "08de61beab8a21c8e0b3906a97defda5f1f66ece", "lessThan": "eb2d16a7d599dc9d4df391b5e660df9949963786", "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/key/af_key.c"], "versions": [{"version": "2.6.21", "status": "affected"}, {"version": "0", "lessThan": "2.6.21", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.168", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.131", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.80", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.21", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.11", "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": "2.6.21", "versionEndExcluding": "5.10.253"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "5.15.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "6.1.168"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "6.6.131"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "6.12.80"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "6.18.21"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "6.19.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d0c5aa8dd38887714f1aad04236a3620b56a5e4e"}, {"url": "https://git.kernel.org/stable/c/e06b596fc4eb01936a2e5dccad17c946d660bab8"}, {"url": "https://git.kernel.org/stable/c/8ddf8de7e758f6888988467af9ffc8adf589fb16"}, {"url": "https://git.kernel.org/stable/c/d3225e6b9bd51ec177970a628fe4b11237ce87d5"}, {"url": "https://git.kernel.org/stable/c/7b18692c59afb8e5c364c8e3ac01e51dd6b52028"}, {"url": "https://git.kernel.org/stable/c/83f644ea92987c100b82d8481ae2230faeed3d34"}, {"url": "https://git.kernel.org/stable/c/ee836e820a40e2ca4da8af7310bff92d586772d4"}, {"url": "https://git.kernel.org/stable/c/eb2d16a7d599dc9d4df391b5e660df9949963786"}], "title": "af_key: validate families in pfkey_send_migrate()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_key: validate families in pfkey_send_migrate()\n\nsyzbot was able to trigger a crash in skb_put() [1]\n\nIssue is that pfkey_send_migrate() does not check old/new families,\nand that set_ipsecrequest() @family argument was truncated,\nthus possibly overfilling the skb.\n\nValidate families early, do not wait set_ipsecrequest().\n\n[1]\n\nskbuff: skb_over_panic: text:ffffffff8a752120 len:392 put:16 head:ffff88802a4ad040 data:ffff88802a4ad040 tail:0x188 end:0x180 dev:<NULL>\n kernel BUG at net/core/skbuff.c:214 !\nCall Trace:\n <TASK>\n skb_over_panic net/core/skbuff.c:219 [inline]\n skb_put+0x159/0x210 net/core/skbuff.c:2655\n skb_put_zero include/linux/skbuff.h:2788 [inline]\n set_ipsecrequest net/key/af_key.c:3532 [inline]\n pfkey_send_migrate+0x1270/0x2e50 net/key/af_key.c:3636\n km_migrate+0x155/0x260 net/xfrm/xfrm_state.c:2848\n xfrm_migrate+0x2140/0x2450 net/xfrm/xfrm_policy.c:4705\n xfrm_do_migrate+0x8ff/0xaa0 net/xfrm/xfrm_user.c:3150"}], "id": "CVE-2026-31515", "lastModified": "2026-04-22T14:16:50.940", "metrics": {}, "published": "2026-04-22T14:16:50.940", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7b18692c59afb8e5c364c8e3ac01e51dd6b52028"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/83f644ea92987c100b82d8481ae2230faeed3d34"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ddf8de7e758f6888988467af9ffc8adf589fb16"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d0c5aa8dd38887714f1aad04236a3620b56a5e4e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d3225e6b9bd51ec177970a628fe4b11237ce87d5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e06b596fc4eb01936a2e5dccad17c946d660bab8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb2d16a7d599dc9d4df391b5e660df9949963786"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ee836e820a40e2ca4da8af7310bff92d586772d4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: af_key: validate families in pfkey_send_migrate()", "id": "2460723", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460723"}, "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-131", "details": ["A flaw was found in the Linux kernel. The `pfkey_send_migrate` function, which manages security associations, does not properly validate address families. This oversight can lead to an overfill of the socket buffer (skb), a data structure used for network packets, when processing certain requests. A local user could exploit this vulnerability to trigger a kernel crash, resulting in a Denial of Service (DoS) for the affected system."], "name": "CVE-2026-31515", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "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": "2026-04-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31515\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31515\nhttps://lore.kernel.org/linux-cve-announce/2026042210-CVE-2026-31515-d929@gregkh/T"], "threat_severity": "Moderate"}