{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53080","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-05-02T15:51:43.549Z","datePublished":"2025-05-02T15:55:29.825Z","dateUpdated":"2026-08-05T09:12:38.067Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T09:12:38.067Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: Add missing overflow check in xdp_umem_reg\n\nThe number of chunks can overflow u32. Make sure to return -EINVAL on\noverflow. Also remove a redundant u32 cast assigning umem->npgs."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The bug is reached via AF_XDP setsockopt(XDP_UMEM_REG) on a local socket (socket(AF_XDP) → xsk_setsockopt → xdp_umem_create → xdp_umem_reg), not via remote packet processing.\nAC:L - The attacker fully controls umem size and chunk_size; on a large-memory AF_XDP host with sufficient memlock the overflow and subsequent OOB via crafted fill-queue addresses are reliably reproducible with no race or victim-state dependency.\nPR:L - Socket creation only requires ns_capable(net->user_ns, CAP_NET_RAW), which an unprivileged user can obtain in a user+net namespace (unshare -Urn); no init-namespace root is required for the vulnerable registration path.\nUI:N - Exploitation is entirely via the attacker’s own syscalls (socket/setsockopt/bind and ring operations); no victim action is required.\nS:U - Impact is memory corruption within the host kernel’s AF_XDP/umem subsystem and does not cross a VM, IOMMU, or other security authority boundary.\nC:H - Truncated umem->chunks undersizes pool->heads while addrs_cnt remains the full umem size, so xp_alloc indexing via xp_aligned_extract_idx yields out-of-bounds reads of adjacent kernel heap objects.\nI:H - The same heads[] OOB write/use of attacker-influenced xdp_buff_xsk slots is memory corruption that can be leveraged for control-flow hijacking or arbitrary kernel writes.\nA:H - Out-of-bounds heads[] access can oops/panic the kernel, and any such memory-corruption path is scored Availability High."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/xdp/xdp_umem.c"],"versions":[{"version":"bbff2f321a864ee07c9d3d1245af498023146951","lessThan":"580634b03a55f04a3c1968bcbd97736c079c6601","status":"affected","versionType":"git"},{"version":"bbff2f321a864ee07c9d3d1245af498023146951","lessThan":"3cfc3564411acf96bf2fb791f706a1aa4f872c1d","status":"affected","versionType":"git"},{"version":"bbff2f321a864ee07c9d3d1245af498023146951","lessThan":"a069909acc4435eeb41d05ccc03baa447cc01b7e","status":"affected","versionType":"git"},{"version":"bbff2f321a864ee07c9d3d1245af498023146951","lessThan":"bb2e3bfb2a79db0c2057c6f701b782954394c67f","status":"affected","versionType":"git"},{"version":"bbff2f321a864ee07c9d3d1245af498023146951","lessThan":"c7df4813b149362248d6ef7be41a311e27bf75fe","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/xdp/xdp_umem.c"],"versions":[{"version":"4.18","status":"affected"},{"version":"0","lessThan":"4.18","status":"unaffected","versionType":"semver"},{"version":"5.10.177","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.105","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.22","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2.9","lessThanOrEqual":"6.2.*","status":"unaffected","versionType":"semver"},{"version":"6.3","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":"4.18","versionEndExcluding":"5.10.177"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"5.15.105"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.1.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/580634b03a55f04a3c1968bcbd97736c079c6601"},{"url":"https://git.kernel.org/stable/c/3cfc3564411acf96bf2fb791f706a1aa4f872c1d"},{"url":"https://git.kernel.org/stable/c/a069909acc4435eeb41d05ccc03baa447cc01b7e"},{"url":"https://git.kernel.org/stable/c/bb2e3bfb2a79db0c2057c6f701b782954394c67f"},{"url":"https://git.kernel.org/stable/c/c7df4813b149362248d6ef7be41a311e27bf75fe"}],"title":"xsk: Add missing overflow check in xdp_umem_reg","x_generator":{"engine":"bippy-1.2.0"}}}}