{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53247", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.394Z", "datePublished": "2026-06-25T08:39:40.654Z", "dateUpdated": "2026-06-25T08:39:40.654Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-25T08:39:40.654Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown\n\nmtk_free_dev() calls metadata_dst_free() which frees the metadata_dst\nwith kfree() immediately, bypassing the RCU grace period.\nIn the RX path, skb_dst_set_noref() sets a non-refcounted pointer from\nthe skb to the metadata_dst. This function requires RCU read-side\nprotection and the dst must remain valid until all RCU readers complete.\nSince metadata_dst_free() calls kfree() directly, a use-after-free can\noccur if any skb still holds a noref pointer to the dst when the driver\ntears it down.\nReplace metadata_dst_free() with dst_release() which properly goes\nthrough the refcount path: when the refcount drops to zero, it schedules\nthe actual free via call_rcu_hurry(), ensuring all RCU readers have\ncompleted before the memory is freed."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mediatek/mtk_eth_soc.c"], "versions": [{"version": "2d7605a729062bb554f03c5983d8cfb8c0b42e9c", "lessThan": "72775977e89c25c99ee84d2c5baa3f86a8ba5cb4", "status": "affected", "versionType": "git"}, {"version": "2d7605a729062bb554f03c5983d8cfb8c0b42e9c", "lessThan": "459c6f35c58cf0fd5247e55d73ddaa29571d9b7e", "status": "affected", "versionType": "git"}, {"version": "2d7605a729062bb554f03c5983d8cfb8c0b42e9c", "lessThan": "e634408d2b0cd939cfe019398a21fb47b7a8ffe3", "status": "affected", "versionType": "git"}, {"version": "2d7605a729062bb554f03c5983d8cfb8c0b42e9c", "lessThan": "2d86aeb46d5f69c704065a8c69822582787272a1", "status": "affected", "versionType": "git"}, {"version": "2d7605a729062bb554f03c5983d8cfb8c0b42e9c", "lessThan": "80df409e1a483676826a6c66e693dba6ac507751", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mediatek/mtk_eth_soc.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "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": "6.2", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/72775977e89c25c99ee84d2c5baa3f86a8ba5cb4"}, {"url": "https://git.kernel.org/stable/c/459c6f35c58cf0fd5247e55d73ddaa29571d9b7e"}, {"url": "https://git.kernel.org/stable/c/e634408d2b0cd939cfe019398a21fb47b7a8ffe3"}, {"url": "https://git.kernel.org/stable/c/2d86aeb46d5f69c704065a8c69822582787272a1"}, {"url": "https://git.kernel.org/stable/c/80df409e1a483676826a6c66e693dba6ac507751"}], "title": "net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown", "id": "2492778", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492778"}, "csaw": false, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's ethernet driver for MediaTek (mtk_eth_soc) network devices. This vulnerability, a 'use-after-free', occurs when the system attempts to free a memory region while it is still being used by network packet processing. This can allow a local attacker to trigger system instability, potentially leading to a denial of service (DoS) or, in some cases, unauthorized code execution."], "name": "CVE-2026-53247", "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": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53247\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53247\nhttps://lore.kernel.org/linux-cve-announce/2026062512-CVE-2026-53247-7eed@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d7605a729062bb554f03c5983d8cfb8c0b42e9c,72775977e89c25c99ee84d2c5baa3f86a8ba5cb4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d7605a729062bb554f03c5983d8cfb8c0b42e9c,459c6f35c58cf0fd5247e55d73ddaa29571d9b7e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d7605a729062bb554f03c5983d8cfb8c0b42e9c,e634408d2b0cd939cfe019398a21fb47b7a8ffe3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d7605a729062bb554f03c5983d8cfb8c0b42e9c,2d86aeb46d5f69c704065a8c69822582787272a1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d7605a729062bb554f03c5983d8cfb8c0b42e9c,80df409e1a483676826a6c66e693dba6ac507751)"}}], "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": "6.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"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": "2026-06-25T12:00:13.998223+00:00", "updated": "2026-06-26T15:30:02.630105+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}