{"id":"DEBIAN-CVE-2022-49307","details":"In the Linux kernel, the following vulnerability has been resolved:  tty: synclink_gt: Fix null-pointer-dereference in slgt_clean()  When the driver fails at alloc_hdlcdev(), and then we remove the driver module, we will get the following splat:  [   25.065966] general protection fault, probably for non-canonical address 0xdffffc0000000182: 0000 [#1] PREEMPT SMP KASAN PTI [   25.066914] KASAN: null-ptr-deref in range [0x0000000000000c10-0x0000000000000c17] [   25.069262] RIP: 0010:detach_hdlc_protocol+0x2a/0x3e0 [   25.077709] Call Trace: [   25.077924]  \u003cTASK\u003e [   25.078108]  unregister_hdlc_device+0x16/0x30 [   25.078481]  slgt_cleanup+0x157/0x9f0 [synclink_gt]  Fix this by checking whether the 'info-\u003enetdev' is a null pointer first.","modified":"2026-09-01T16:05:30.506112966Z","published":"2025-02-26T07:01:07.503Z","upstream":["CVE-2022-49307"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49307"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49307.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49307.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49307.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"}]}