CVE-2024-50212

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-50212", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.971Z", "datePublished": "2024-11-09T10:14:24.249Z", "dateUpdated": "2026-05-11T20:47:35.662Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:47:35.662Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlib: alloc_tag_module_unload must wait for pending kfree_rcu calls\n\nBen Greear reports following splat:\n ------------[ cut here ]------------\n net/netfilter/nf_nat_core.c:1114 module nf_nat func:nf_nat_register_fn has 256 allocated at module unload\n WARNING: CPU: 1 PID: 10421 at lib/alloc_tag.c:168 alloc_tag_module_unload+0x22b/0x3f0\n Modules linked in: nf_nat(-) btrfs ufs qnx4 hfsplus hfs minix vfat msdos fat\n...\n Hardware name: Default string Default string/SKYBAY, BIOS 5.12 08/04/2020\n RIP: 0010:alloc_tag_module_unload+0x22b/0x3f0\n codetag_unload_module+0x19b/0x2a0\n ? codetag_load_module+0x80/0x80\n\nnf_nat module exit calls kfree_rcu on those addresses, but the free\noperation is likely still pending by the time alloc_tag checks for leaks.\n\nWait for outstanding kfree_rcu operations to complete before checking\nresolves this warning.\n\nReproducer:\nunshare -n iptables-nft -t nat -A PREROUTING -p tcp\ngrep nf_nat /proc/allocinfo # will list 4 allocations\nrmmod nft_chain_nat\nrmmod nf_nat # will WARN.\n\n[akpm@linux-foundation.org: add comment]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["lib/codetag.c"], "versions": [{"version": "a473573964e51dcb6efc182f773cd3924be4a184", "lessThan": "24211fb49c9ac1b576470b7e393a5a0b50af2707", "status": "affected", "versionType": "git"}, {"version": "a473573964e51dcb6efc182f773cd3924be4a184", "lessThan": "dc783ba4b9df3fb3e76e968b2cbeb9960069263c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["lib/codetag.c"], "versions": [{"version": "6.10", "status": "affected"}, {"version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.7", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "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": "6.10", "versionEndExcluding": "6.11.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/24211fb49c9ac1b576470b7e393a5a0b50af2707"}, {"url": "https://git.kernel.org/stable/c/dc783ba4b9df3fb3e76e968b2cbeb9960069263c"}], "title": "lib: alloc_tag_module_unload must wait for pending kfree_rcu calls", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["lib/codetag.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "24211fb49c9ac1b576470b7e393a5a0b50af2707", "status": "affected", "version": "a473573964e51dcb6efc182f773cd3924be4a184", "versionType": "git"}, {"lessThan": "dc783ba4b9df3fb3e76e968b2cbeb9960069263c", "status": "affected", "version": "a473573964e51dcb6efc182f773cd3924be4a184", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["lib/codetag.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.10"}, {"lessThan": "6.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.11.*", "status": "unaffected", "version": "6.11.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FFF78B38-3E68-45EF-A942-449C644E7C34", "versionEndExcluding": "6.11.7", "versionStartIncluding": "6.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlib: alloc_tag_module_unload must wait for pending kfree_rcu calls\n\nBen Greear reports following splat:\n ------------[ cut here ]------------\n net/netfilter/nf_nat_core.c:1114 module nf_nat func:nf_nat_register_fn has 256 allocated at module unload\n WARNING: CPU: 1 PID: 10421 at lib/alloc_tag.c:168 alloc_tag_module_unload+0x22b/0x3f0\n Modules linked in: nf_nat(-) btrfs ufs qnx4 hfsplus hfs minix vfat msdos fat\n...\n Hardware name: Default string Default string/SKYBAY, BIOS 5.12 08/04/2020\n RIP: 0010:alloc_tag_module_unload+0x22b/0x3f0\n codetag_unload_module+0x19b/0x2a0\n ? codetag_load_module+0x80/0x80\n\nnf_nat module exit calls kfree_rcu on those addresses, but the free\noperation is likely still pending by the time alloc_tag checks for leaks.\n\nWait for outstanding kfree_rcu operations to complete before checking\nresolves this warning.\n\nReproducer:\nunshare -n iptables-nft -t nat -A PREROUTING -p tcp\ngrep nf_nat /proc/allocinfo # will list 4 allocations\nrmmod nft_chain_nat\nrmmod nf_nat # will WARN.\n\n[akpm@linux-foundation.org: add comment]"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: lib: alloc_tag_module_unload debe esperar llamadas kfree_rcu pendientes Ben Greear informa del siguiente splat: ------------[ cortar aqu\u00ed ]------------ net/netfilter/nf_nat_core.c:1114 m\u00f3dulo nf_nat func:nf_nat_register_fn tiene 256 asignados en la descarga del m\u00f3dulo ADVERTENCIA: CPU: 1 PID: 10421 en lib/alloc_tag.c:168 alloc_tag_module_unload+0x22b/0x3f0 M\u00f3dulos vinculados en: nf_nat(-) btrfs ufs qnx4 hfsplus hfs minix vfat msdos fat ... Nombre del hardware: Cadena predeterminada Cadena predeterminada/SKYBAY, BIOS 5.12 08/04/2020 RIP: 0010:alloc_tag_module_unload+0x22b/0x3f0 codetag_unload_module+0x19b/0x2a0 ? codetag_load_module+0x80/0x80 La salida del m\u00f3dulo nf_nat llama a kfree_rcu en esas direcciones, pero es probable que la operaci\u00f3n de liberaci\u00f3n a\u00fan est\u00e9 pendiente en el momento en que alloc_tag verifique si hay fugas. Espere a que se completen las operaciones kfree_rcu pendientes antes de que la verificaci\u00f3n resuelva esta advertencia. Reproductor: unshare -n iptables-nft -t nat -A PREROUTING -p tcp grep nf_nat /proc/allocinfo # enumerar\u00e1 4 asignaciones rmmod nft_chain_nat rmmod nf_nat # emitir\u00e1 una ADVERTENCIA. [akpm@linux-foundation.org: agregar comentario]"}], "id": "CVE-2024-50212", "lastModified": "2026-06-17T08:03:53.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-11-09T11:15:04.940", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/24211fb49c9ac1b576470b7e393a5a0b50af2707"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dc783ba4b9df3fb3e76e968b2cbeb9960069263c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: lib: alloc_tag_module_unload must wait for pending kfree_rcu calls", "id": "2324877", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2324877"}, "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"}, "cwe": "CWE-667", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nlib: alloc_tag_module_unload must wait for pending kfree_rcu calls\nBen Greear reports following splat:\n------------[ cut here ]------------\nnet/netfilter/nf_nat_core.c:1114 module nf_nat func:nf_nat_register_fn has 256 allocated at module unload\nWARNING: CPU: 1 PID: 10421 at lib/alloc_tag.c:168 alloc_tag_module_unload+0x22b/0x3f0\nModules linked in: nf_nat(-) btrfs ufs qnx4 hfsplus hfs minix vfat msdos fat\n...\nHardware name: Default string Default string/SKYBAY, BIOS 5.12 08/04/2020\nRIP: 0010:alloc_tag_module_unload+0x22b/0x3f0\ncodetag_unload_module+0x19b/0x2a0\n? codetag_load_module+0x80/0x80\nnf_nat module exit calls kfree_rcu on those addresses, but the free\noperation is likely still pending by the time alloc_tag checks for leaks.\nWait for outstanding kfree_rcu operations to complete before checking\nresolves this warning.\nReproducer:\nunshare -n iptables-nft -t nat -A PREROUTING -p tcp\ngrep nf_nat /proc/allocinfo # will list 4 allocations\nrmmod nft_chain_nat\nrmmod nf_nat # will WARN.\n[akpm@linux-foundation.org: add comment]"], "name": "CVE-2024-50212", "package_state": [{"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": "2024-11-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50212\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50212\nhttps://lore.kernel.org/linux-cve-announce/2024110921-CVE-2024-50212-74b8@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-13T21:06:39.364663+00:00", "updated": "2025-07-13T21:06:39.364714+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}