{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52971", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.375Z", "datePublished": "2026-06-24T16:28:49.637Z", "dateUpdated": "2026-06-24T16:28:49.637Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:28:49.637Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ena: PHC: Fix potential use-after-free in get_timestamp\n\nMove the phc->active check and resp pointer assignment to after\nacquiring the spinlock. Previously, phc->active was checked without\nholding the lock, and resp was cached from ena_dev->phc.virt_addr\nbefore the lock was acquired.\n\nIf ena_com_phc_destroy() runs between the lockless active check and\nthe lock acquisition, it sets active=false, releases the lock, frees\nthe DMA memory, and sets virt_addr=NULL. The get_timestamp path would\nthen read a NULL virt_addr and dereference it.\n\nWith both the active check and the pointer read under the lock,\ndestroy cannot free the memory while get_timestamp is using it."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/amazon/ena/ena_com.c"], "versions": [{"version": "e0ea34158ee8c4f7536cd781010339ff28c0d24c", "lessThan": "95e8ae9af2a61b4e72f5c585bf4c7d8aaf2a2c98", "status": "affected", "versionType": "git"}, {"version": "e0ea34158ee8c4f7536cd781010339ff28c0d24c", "lessThan": "ca9ed40f28949353911dcb524ff8fff2f3409c97", "status": "affected", "versionType": "git"}, {"version": "e0ea34158ee8c4f7536cd781010339ff28c0d24c", "lessThan": "e42c755582f0960e684298762f0ab927b3778376", "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/amazon/ena/ena_com.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "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": "6.17", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/95e8ae9af2a61b4e72f5c585bf4c7d8aaf2a2c98"}, {"url": "https://git.kernel.org/stable/c/ca9ed40f28949353911dcb524ff8fff2f3409c97"}, {"url": "https://git.kernel.org/stable/c/e42c755582f0960e684298762f0ab927b3778376"}], "title": "net: ena: PHC: Fix potential use-after-free in get_timestamp", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{}

{"created": "2026-06-24T19:15:15.570584+00:00", "updated": "2026-06-24T19:15:15.570590+00:00", "vendors": [], "weaknesses": ["CWE-416"]}