{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98382","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.345Z","datePublished":"2026-10-09T07:34:21.718Z","dateUpdated":"2026-10-09T07:34:21.718Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-09T07:34:21.718Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject dev-bound-only programs on other devices\n\n__bpf_offload_dev_match() falls back to comparing offdev pointers after an\nexact netdev mismatch. Bound-only programs normally have NULL offdevs, so\nunrelated netdevs compare equal. A bound-only program on an\noffload-registered netdev can instead inherit a real offdev and match a\nsibling port. With CAP_BPF and CAP_NET_ADMIN, a caller can use\nbpf(BPF_LINK_CREATE) with a different target ifindex to run metadata kfuncs\nspecialized for the bound driver on the target driver's xdp_buff. Running a\nveth-bound program on tun reads beyond tun's bare stack xdp_buff as a\nveth_xdp_buff.\n\n  Oops: general protection fault, probably for non-canonical address\n  KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n  RIP: 0010:veth_xdp_rx_timestamp (drivers/net/veth.c:1673)\n  Call Trace:\n   ...\n   tun_build_skb (drivers/net/tun.c:1739)\n   tun_get_user (drivers/net/tun.c:1856)\n   tun_chr_write_iter (drivers/net/tun.c:2091)\n   vfs_write (fs/read_write.c:595 fs/read_write.c:687)\n   ksys_write (fs/read_write.c:739)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:84)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n  Kernel panic - not syncing: Fatal exception in interrupt\n\nRestrict non-offloaded programs to exact netdev matches and retain the\nshared-offdev fallback only for genuinely offloaded multi-port programs."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/offload.c"],"versions":[{"version":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","lessThan":"e57f04194361574493e3e6cf0b9e9c69e4ae9791","status":"affected","versionType":"git"},{"version":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","lessThan":"0dceda331180617aeeb22381e8480b37f18ba08b","status":"affected","versionType":"git"},{"version":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","lessThan":"940b626854de200e6187777d42114727daca617c","status":"affected","versionType":"git"},{"version":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","lessThan":"bb375f3c5990e29851894f20ebc4b9dbc6676126","status":"affected","versionType":"git"},{"version":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","lessThan":"6db1ce73e9853f533eb7f413f14ba00f8ec6f80d","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/offload.c"],"versions":[{"version":"6.3","status":"affected"},{"version":"0","lessThan":"6.3","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.55","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.9","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc5","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":"6.3","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"7.3-rc5"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e57f04194361574493e3e6cf0b9e9c69e4ae9791"},{"url":"https://git.kernel.org/stable/c/0dceda331180617aeeb22381e8480b37f18ba08b"},{"url":"https://git.kernel.org/stable/c/940b626854de200e6187777d42114727daca617c"},{"url":"https://git.kernel.org/stable/c/bb375f3c5990e29851894f20ebc4b9dbc6676126"},{"url":"https://git.kernel.org/stable/c/6db1ce73e9853f533eb7f413f14ba00f8ec6f80d"}],"title":"bpf: Reject dev-bound-only programs on other devices","x_generator":{"engine":"bippy-1.2.0"}}}}