{"id":"DEBIAN-CVE-2022-49973","details":"In the Linux kernel, the following vulnerability has been resolved:  skmsg: Fix wrong last sg check in sk_msg_recvmsg()  Fix one kernel NULL pointer dereference as below:  [  224.462334] Call Trace: [  224.462394]  __tcp_bpf_recvmsg+0xd3/0x380 [  224.462441]  ? sock_has_perm+0x78/0xa0 [  224.462463]  tcp_bpf_recvmsg+0x12e/0x220 [  224.462494]  inet_recvmsg+0x5b/0xd0 [  224.462534]  __sys_recvfrom+0xc8/0x130 [  224.462574]  ? syscall_trace_enter+0x1df/0x2e0 [  224.462606]  ? __do_page_fault+0x2de/0x500 [  224.462635]  __x64_sys_recvfrom+0x24/0x30 [  224.462660]  do_syscall_64+0x5d/0x1d0 [  224.462709]  entry_SYSCALL_64_after_hwframe+0x65/0xca  In commit 9974d37ea75f (\"skmsg: Fix invalid last sg check in sk_msg_recvmsg()\"), we change last sg check to sg_is_last(), but in sockmap redirection case (without stream_parser/stream_verdict/ skb_verdict), we did not mark the end of the scatterlist. Check the sk_msg_alloc, sk_msg_page_add, and bpf_msg_push_data functions, they all do not mark the end of sg. They are expected to use sg.end for end judgment. So the judgment of '(i != msg_rx-\u003esg.end)' is added back here.","modified":"2026-08-27T23:04:30.894310411Z","published":"2025-06-18T11:15:24.673Z","upstream":["CVE-2022-49973"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49973"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49973.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49973.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49973.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}