{"id":"DEBIAN-CVE-2024-26863","details":"In the Linux kernel, the following vulnerability has been resolved:  hsr: Fix uninit-value access in hsr_get_node()  KMSAN reported the following uninit-value access issue [1]:  ===================================================== BUG: KMSAN: uninit-value in hsr_get_node+0xa2e/0xa40 net/hsr/hsr_framereg.c:246  hsr_get_node+0xa2e/0xa40 net/hsr/hsr_framereg.c:246  fill_frame_info net/hsr/hsr_forward.c:577 [inline]  hsr_forward_skb+0xe12/0x30e0 net/hsr/hsr_forward.c:615  hsr_dev_xmit+0x1a1/0x270 net/hsr/hsr_device.c:223  __netdev_start_xmit include/linux/netdevice.h:4940 [inline]  netdev_start_xmit include/linux/netdevice.h:4954 [inline]  xmit_one net/core/dev.c:3548 [inline]  dev_hard_start_xmit+0x247/0xa10 net/core/dev.c:3564  __dev_queue_xmit+0x33b8/0x5130 net/core/dev.c:4349  dev_queue_xmit include/linux/netdevice.h:3134 [inline]  packet_xmit+0x9c/0x6b0 net/packet/af_packet.c:276  packet_snd net/packet/af_packet.c:3087 [inline]  packet_sendmsg+0x8b1d/0x9f30 net/packet/af_packet.c:3119  sock_sendmsg_nosec net/socket.c:730 [inline]  __sock_sendmsg net/socket.c:745 [inline]  __sys_sendto+0x735/0xa10 net/socket.c:2191  __do_sys_sendto net/socket.c:2203 [inline]  __se_sys_sendto net/socket.c:2199 [inline]  __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199  do_syscall_x64 arch/x86/entry/common.c:52 [inline]  do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83  entry_SYSCALL_64_after_hwframe+0x63/0x6b  Uninit was created at:  slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768  slab_alloc_node mm/slub.c:3478 [inline]  kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560  __alloc_skb+0x318/0x740 net/core/skbuff.c:651  alloc_skb include/linux/skbuff.h:1286 [inline]  alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6334  sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2787  packet_alloc_skb net/packet/af_packet.c:2936 [inline]  packet_snd net/packet/af_packet.c:3030 [inline]  packet_sendmsg+0x70e8/0x9f30 net/packet/af_packet.c:3119  sock_sendmsg_nosec net/socket.c:730 [inline]  __sock_sendmsg net/socket.c:745 [inline]  __sys_sendto+0x735/0xa10 net/socket.c:2191  __do_sys_sendto net/socket.c:2203 [inline]  __se_sys_sendto net/socket.c:2199 [inline]  __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199  do_syscall_x64 arch/x86/entry/common.c:52 [inline]  do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83  entry_SYSCALL_64_after_hwframe+0x63/0x6b  CPU: 1 PID: 5033 Comm: syz-executor334 Not tainted 6.7.0-syzkaller-00562-g9f8413c4a66f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 =====================================================  If the packet type ID field in the Ethernet header is either ETH_P_PRP or ETH_P_HSR, but it is not followed by an HSR tag, hsr_get_skb_sequence_nr() reads an invalid value as a sequence number. This causes the above issue.  This patch fixes the issue by returning NULL if the Ethernet header is not followed by an HSR tag.","modified":"2026-09-15T09:03:05.724141091Z","published":"2024-04-17T11:15:09.100Z","upstream":["CVE-2024-26863"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-26863"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.85-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26863.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.7.12-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26863.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.7.12-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26863.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"}]}