{"cve":"CVE-2022-49691","nvd":{"published":"2025-02-26T07:01:43.893","modified":"2026-06-17T05:18:52.343","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nerspan: do not assume transport header is always set\n\nRewrite tests in ip6erspan_tunnel_xmit() and\nerspan_fb_xmit() to not assume transport header is set.\n\nsyzbot reported:\n\nWARNING: CPU: 0 PID: 1350 at include/linux/skbuff.h:2911 skb_transport_header include/linux/skbuff.h:2911 [inline]\nWARNING: CPU: 0 PID: 1350 at include/linux/skbuff.h:2911 ip6erspan_tunnel_xmit+0x15af/0x2eb0 net/ipv6/ip6_gre.c:963\nModules linked in:\nCPU: 0 PID: 1350 Comm: aoe_tx0 Not tainted 5.19.0-rc2-syzkaller-00160-g274295c6e53f #0\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014\nRIP: 0010:skb_transport_header include/linux/skbuff.h:2911 [inline]\nRIP: 0010:ip6erspan_tunnel_xmit+0x15af/0x2eb0 net/ipv6/ip6_gre.c:963\nCode: 0f 47 f0 40 88 b5 7f fe ff ff e8 8c 16 4b f9 89 de bf ff ff ff ff e8 a0 12 4b f9 66 83 fb ff 0f 85 1d f1 ff ff e8 71 16 4b f9 <0f> 0b e9 43 f0 ff ff e8 65 16 4b f9 48 8d 85 30 ff ff ff ba 60 00\nRSP: 0018:ffffc90005daf910 EFLAGS: 00010293\nRAX: 0000000000000000 RBX: 000000000000ffff RCX: 0000000000000000\nRDX: ffff88801f032100 RSI: ffffffff882e8d3f RDI: 0000000000000003\nRBP: ffffc90005dafab8 R08: 0000000000000003 R09: 000000000000ffff\nR10: 000000000000ffff R11: 0000000000000000 R12: ffff888024f21d40\nR13: 000000000000a288 R14: 00000000000000b0 R15: ffff888025a2e000\nFS: 0000000000000000(0000) GS:ffff88802c800000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000001b2e425000 CR3: 000000006d099000 CR4: 0000000000152ef0\nCall Trace:\n<TASK>\n__netdev_start_xmit include/linux/netdevice.h:4805 [inline]\nnetdev_start_xmit include/linux/netdevice.h:4819 [inline]\nxmit_one net/core/dev.c:3588 [inline]\ndev_hard_start_xmit+0x188/0x880 net/core/dev.c:3604\nsch_direct_xmit+0x19f/0xbe0 net/sched/sch_generic.c:342\n__dev_xmit_skb net/core/dev.c:3815 [inline]\n__dev_queue_xmit+0x14a1/0x3900 net/core/dev.c:4219\ndev_queue_xmit include/linux/netdevice.h:2994 [inline]\ntx+0x6a/0xc0 drivers/block/aoe/aoenet.c:63\nkthread+0x1e7/0x3b0 drivers/block/aoe/aoecmd.c:1229\nkthread+0x2e9/0x3a0 kernel/kthread.c:376\nret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302\n</TASK>","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/02da602bc2f353dccd9e489a604490034ded941e","https://git.kernel.org/stable/c/2c8aeffc7c586d53e1d380f010bdca4f710f2480","https://git.kernel.org/stable/c/301bd140ed0b24f0da660874c7e8a47dad8c8222","https://git.kernel.org/stable/c/a3b2470399f679587c45abe56e551caf10becca2","https://git.kernel.org/stable/c/cec9867ee55478ef5dcb2adf030fe0c442a4c4ee"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49691","score":0.00282,"percentile":0.20743,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}