CVE-2026-53157

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RCU readers walking\nthe same list can still hold a pointer to the object after it has been\nremoved, leading to a slab-use-after-free.\n\nUse kfree_rcu(), matching the lifetime rule already used by\nphonet_address_del() for the same object type."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/phonet/pn_dev.c"], "versions": [{"version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165", "lessThan": "d59794337ea496042288c7c68356d9b9ca7f46a9", "status": "affected", "versionType": "git"}, {"version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165", "lessThan": "6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763", "status": "affected", "versionType": "git"}, {"version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165", "lessThan": "2ec8011cce0cd0fc7a5068585d867fc08d508578", "status": "affected", "versionType": "git"}, {"version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165", "lessThan": "09c9b92c2010481160245244ea8fa1d06d5d4ae0", "status": "affected", "versionType": "git"}, {"version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165", "lessThan": "bd2ab4d800fc26814d89328d87b5f97ef6aa906a", "status": "affected", "versionType": "git"}, {"version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165", "lessThan": "52b8f5ef82c886f7cd24617915e4b1579ddfd001", "status": "affected", "versionType": "git"}, {"version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165", "lessThan": "bff309ea51f1395c1ef8be8b75ce62d28a319113", "status": "affected", "versionType": "git"}, {"version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165", "lessThan": "71de0177b28da751f407581a4515cf4d762f6296", "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/phonet/pn_dev.c"], "versions": [{"version": "2.6.33", "status": "affected"}, {"version": "0", "lessThan": "2.6.33", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.260", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.211", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.177", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.144", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.95", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "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": "2.6.33", "versionEndExcluding": "5.10.260"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.15.211"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.1.177"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.6.144"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.12.95"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d59794337ea496042288c7c68356d9b9ca7f46a9"}, {"url": "https://git.kernel.org/stable/c/6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763"}, {"url": "https://git.kernel.org/stable/c/2ec8011cce0cd0fc7a5068585d867fc08d508578"}, {"url": "https://git.kernel.org/stable/c/09c9b92c2010481160245244ea8fa1d06d5d4ae0"}, {"url": "https://git.kernel.org/stable/c/bd2ab4d800fc26814d89328d87b5f97ef6aa906a"}, {"url": "https://git.kernel.org/stable/c/52b8f5ef82c886f7cd24617915e4b1579ddfd001"}, {"url": "https://git.kernel.org/stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113"}, {"url": "https://git.kernel.org/stable/c/71de0177b28da751f407581a4515cf4d762f6296"}], "title": "net: phonet: free phonet_device after RCU grace period", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

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"cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*", "matchCriteriaId": "B0E8FC71-3952-444C-83E9-718DBBBEC615", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:*", "matchCriteriaId": "1039E95A-8CC3-4C88-8FF9-5C08EEB861C9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phonet: free phonet_device after RCU grace period\n\nphonet_device_destroy() removes a phonet_device from the per-net device\nlist with list_del_rcu(), but frees it immediately. RCU readers walking\nthe same list can still hold a pointer to the object after it has been\nremoved, leading to a slab-use-after-free.\n\nUse kfree_rcu(), matching the lifetime rule already used by\nphonet_address_del() for the same object type."}], "id": "CVE-2026-53157", "lastModified": "2026-07-07T18:54:28.800", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-06-25T09:16:33.073", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/09c9b92c2010481160245244ea8fa1d06d5d4ae0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2ec8011cce0cd0fc7a5068585d867fc08d508578"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/52b8f5ef82c886f7cd24617915e4b1579ddfd001"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/71de0177b28da751f407581a4515cf4d762f6296"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bd2ab4d800fc26814d89328d87b5f97ef6aa906a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d59794337ea496042288c7c68356d9b9ca7f46a9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: phonet: free phonet_device after RCU grace period", "id": "2492824", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492824"}, "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-825", "details": ["A flaw was found in the Linux kernel's phonet networking subsystem. This vulnerability occurs because a phonet device is freed immediately after being removed from a list, while other parts of the kernel (RCU readers) may still hold a pointer to the freed memory. This can lead to a use-after-free condition, potentially allowing a local attacker to cause a denial of service or escalate privileges."], "name": "CVE-2026-53157", "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": "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": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53157\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53157\nhttps://lore.kernel.org/linux-cve-announce/2026062548-CVE-2026-53157-7e36@gregkh/T"], "threat_severity": "Moderate"}

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