{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-21758", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.761Z", "datePublished": "2025-02-27T02:18:12.496Z", "dateUpdated": "2025-03-24T15:39:54.867Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-03-24T15:39:54.867Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: mcast: add RCU protection to mld_newpack()\n\nmld_newpack() can be called without RTNL or RCU being held.\n\nNote that we no longer can use sock_alloc_send_skb() because\nipv6.igmp_sk uses GFP_KERNEL allocations which can sleep.\n\nInstead use alloc_skb() and charge the net->ipv6.igmp_sk\nsocket under RCU protection."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/mcast.c"], "versions": [{"version": "b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551", "lessThan": "29fa42197f26a97cde29fa8c40beddf44ea5c8f3", "status": "affected", "versionType": "git"}, {"version": "b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551", "lessThan": "e8af3632a7f2da83e27b083f787bced1faba00b1", "status": "affected", "versionType": "git"}, {"version": "b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551", "lessThan": "1b91c597b0214b1b462eb627ec02658c944623f2", "status": "affected", "versionType": "git"}, {"version": "b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551", "lessThan": "25195f9d5ffcc8079ad743a50c0409dbdc48d98a", "status": "affected", "versionType": "git"}, {"version": "b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551", "lessThan": "d60d493b0e65647e0335e6a7c4547abcea7df8e9", "status": "affected", "versionType": "git"}, {"version": "b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551", "lessThan": "a527750d877fd334de87eef81f1cb5f0f0ca3373", "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/ipv6/mcast.c"], "versions": [{"version": "2.6.26", "status": "affected"}, {"version": "0", "lessThan": "2.6.26", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.179", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.129", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.79", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.16", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13.4", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/29fa42197f26a97cde29fa8c40beddf44ea5c8f3"}, {"url": "https://git.kernel.org/stable/c/e8af3632a7f2da83e27b083f787bced1faba00b1"}, {"url": "https://git.kernel.org/stable/c/1b91c597b0214b1b462eb627ec02658c944623f2"}, {"url": "https://git.kernel.org/stable/c/25195f9d5ffcc8079ad743a50c0409dbdc48d98a"}, {"url": "https://git.kernel.org/stable/c/d60d493b0e65647e0335e6a7c4547abcea7df8e9"}, {"url": "https://git.kernel.org/stable/c/a527750d877fd334de87eef81f1cb5f0f0ca3373"}], "title": "ipv6: mcast: add RCU protection to mld_newpack()", "x_generator": {"engine": "bippy-5f407fcff5a0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: mcast: add RCU protection to mld_newpack()\n\nmld_newpack() can be called without RTNL or RCU being held.\n\nNote that we no longer can use sock_alloc_send_skb() because\nipv6.igmp_sk uses GFP_KERNEL allocations which can sleep.\n\nInstead use alloc_skb() and charge the net->ipv6.igmp_sk\nsocket under RCU protection."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv6: mcast: agregar protecci\u00f3n RCU a mld_newpack() mld_newpack() se puede llamar sin que se mantenga RTNL o RCU. Tenga en cuenta que ya no podemos usar sock_alloc_send_skb() porque ipv6.igmp_sk usa asignaciones GFP_KERNEL que pueden dormir. En su lugar, use alloc_skb() y cargue el socket net->ipv6.igmp_sk bajo la protecci\u00f3n RCU."}], "id": "CVE-2025-21758", "lastModified": "2025-03-13T13:15:52.750", "metrics": {}, "published": "2025-02-27T03:15:16.450", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1b91c597b0214b1b462eb627ec02658c944623f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/25195f9d5ffcc8079ad743a50c0409dbdc48d98a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/29fa42197f26a97cde29fa8c40beddf44ea5c8f3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a527750d877fd334de87eef81f1cb5f0f0ca3373"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d60d493b0e65647e0335e6a7c4547abcea7df8e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e8af3632a7f2da83e27b083f787bced1faba00b1"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: ipv6: mcast: add RCU protection to mld_newpack()", "id": "2348531", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348531"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nipv6: mcast: add RCU protection to mld_newpack()\nmld_newpack() can be called without RTNL or RCU being held.\nNote that we no longer can use sock_alloc_send_skb() because\nipv6.igmp_sk uses GFP_KERNEL allocations which can sleep.\nInstead use alloc_skb() and charge the net->ipv6.igmp_sk\nsocket under RCU protection."], "name": "CVE-2025-21758", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "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": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21758\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21758\nhttps://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21758-9f8c@gregkh/T"], "threat_severity": "Moderate"}