{"id":"DEBIAN-CVE-2022-49017","details":"In the Linux kernel, the following vulnerability has been resolved:  tipc: re-fetch skb cb after tipc_msg_validate  As the call trace shows, the original skb was freed in tipc_msg_validate(), and dereferencing the old skb cb would cause an use-after-free crash.    BUG: KASAN: use-after-free in tipc_crypto_rcv_complete+0x1835/0x2240 [tipc]   Call Trace:    \u003cIRQ\u003e    tipc_crypto_rcv_complete+0x1835/0x2240 [tipc]    tipc_crypto_rcv+0xd32/0x1ec0 [tipc]    tipc_rcv+0x744/0x1150 [tipc]   ...   Allocated by task 47078:    kmem_cache_alloc_node+0x158/0x4d0    __alloc_skb+0x1c1/0x270    tipc_buf_acquire+0x1e/0xe0 [tipc]    tipc_msg_create+0x33/0x1c0 [tipc]    tipc_link_build_proto_msg+0x38a/0x2100 [tipc]    tipc_link_timeout+0x8b8/0xef0 [tipc]    tipc_node_timeout+0x2a1/0x960 [tipc]    call_timer_fn+0x2d/0x1c0   ...   Freed by task 47078:    tipc_msg_validate+0x7b/0x440 [tipc]    tipc_crypto_rcv_complete+0x4b5/0x2240 [tipc]    tipc_crypto_rcv+0xd32/0x1ec0 [tipc]    tipc_rcv+0x744/0x1150 [tipc]  This patch fixes it by re-fetching the skb cb from the new allocated skb after calling tipc_msg_validate().","modified":"2026-09-01T16:05:29.668512610Z","published":"2024-10-21T20:15:12.910Z","upstream":["CVE-2022-49017"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49017"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.12-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49017.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.12-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49017.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.12-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49017.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:H/I:H/A:H"}]}