{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49973","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-06-18T10:57:27.384Z","datePublished":"2025-06-18T11:00:36.303Z","dateUpdated":"2026-05-11T19:10:16.844Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:10:16.844Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nskmsg: Fix wrong last sg check in sk_msg_recvmsg()\n\nFix one kernel NULL pointer dereference as below:\n\n[  224.462334] Call Trace:\n[  224.462394]  __tcp_bpf_recvmsg+0xd3/0x380\n[  224.462441]  ? sock_has_perm+0x78/0xa0\n[  224.462463]  tcp_bpf_recvmsg+0x12e/0x220\n[  224.462494]  inet_recvmsg+0x5b/0xd0\n[  224.462534]  __sys_recvfrom+0xc8/0x130\n[  224.462574]  ? syscall_trace_enter+0x1df/0x2e0\n[  224.462606]  ? __do_page_fault+0x2de/0x500\n[  224.462635]  __x64_sys_recvfrom+0x24/0x30\n[  224.462660]  do_syscall_64+0x5d/0x1d0\n[  224.462709]  entry_SYSCALL_64_after_hwframe+0x65/0xca\n\nIn commit 9974d37ea75f (\"skmsg: Fix invalid last sg check in\nsk_msg_recvmsg()\"), we change last sg check to sg_is_last(),\nbut in sockmap redirection case (without stream_parser/stream_verdict/\nskb_verdict), we did not mark the end of the scatterlist. Check the\nsk_msg_alloc, sk_msg_page_add, and bpf_msg_push_data functions, they all\ndo not mark the end of sg. They are expected to use sg.end for end\njudgment. So the judgment of '(i != msg_rx->sg.end)' is added back here."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/skmsg.c"],"versions":[{"version":"293c53b7dbf9073cbcc488f938bc053ff4caeec0","lessThan":"de22cba333d8699ad77e79f862fe1320cb1284de","status":"affected","versionType":"git"},{"version":"1295dae30f30c3daa03005ed8958d44b17f037fd","lessThan":"10ee118a1756141f8e9c87aa7344ed12b41630a8","status":"affected","versionType":"git"},{"version":"9974d37ea75f01b47d16072b5dad305bd8d23fcc","lessThan":"583585e48d965338e73e1eb383768d16e0922d73","status":"affected","versionType":"git"},{"version":"4674c0da448b546e390a981b819cd4af5cb16cf9","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/skmsg.c"],"versions":[{"version":"5.15.61","lessThan":"5.15.66","status":"affected","versionType":"semver"},{"version":"5.19.2","lessThan":"5.19.8","status":"affected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.61","versionEndExcluding":"5.15.66"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19.2","versionEndExcluding":"5.19.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/de22cba333d8699ad77e79f862fe1320cb1284de"},{"url":"https://git.kernel.org/stable/c/10ee118a1756141f8e9c87aa7344ed12b41630a8"},{"url":"https://git.kernel.org/stable/c/583585e48d965338e73e1eb383768d16e0922d73"}],"title":"skmsg: Fix wrong last sg check in sk_msg_recvmsg()","x_generator":{"engine":"bippy-1.2.0"}}}}