CVE-2026-98849pfcp: fix socket lifetime on netdevice registration failure
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: pfcp: fix socket lifetime on netdevice registration failure pfcp_newlink() creates the UDP socket before register_netdevice(). If registration fails after pfcp_dev_init() succeeds, the core calls pfcp_dev_uninit(), which releases the socket and clears pfcp->sk. The newlink error path then releases it again, causing a NULL pointer dereference. This was observed with failslab fault injection: FAULT_INJECTION: forcing a failure. kobject: kobject_add_internal failed for pfcp0 (error: -12 parent: net) BUG: KASAN: null-ptr-deref in udp_tunnel_sock_release+0x1c/0x50 Read of size 8 at addr 0000000000000120 by task ip/1037 Call trace: show_stack+0x18/0x24 (C) dump_stack_lvl+0x78/0x90 print_report+0x468/0x5cc kasan_report+0xa4/0xf0 __asan_load8+0x7c/0xd0 udp_tunnel_sock_release+0x1c/0x50 pfcp_newlink+0x128/0x184 rtnl_newlink+0x848/0xe44 rtnetlink_rcv_msg+0x468/0x514 netlink_rcv_skb+0xc0/0x1f0 rtnetlink_rcv+0x18/0x24 netlink_unicast+0x4b8/0x558 netlink_sendmsg+0x2b8/0x584 ... Return from pfcp_del_sock() if pfcp->sk is NULL.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 76c8764ef36a5d37ea2e551bda28ac7f028383ba – < dcb8f6a79c3360a440c399d85df465a6e59351f1
- affected 76c8764ef36a5d37ea2e551bda28ac7f028383ba – < 4b8ce1686dea1a10805a0807bf492409b0300ee1
- affected 76c8764ef36a5d37ea2e551bda28ac7f028383ba – < 2cee3603ec1d9b5ec7f2121ea3efe9488e906f46
- affected 76c8764ef36a5d37ea2e551bda28ac7f028383ba – < 0f17d2e3dd9cda3ee6d94033d5e5489af168920d
- affected 6.10
- unaffected < 6.10
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.56 – ≤ 6.18.*
- unaffected 7.2.10 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/dcb8f6a79c3360a440c399d85df465a6e59351f1 (opens in a new tab)
- https://git.kernel.org/stable/c/4b8ce1686dea1a10805a0807bf492409b0300ee1 (opens in a new tab)
- https://git.kernel.org/stable/c/2cee3603ec1d9b5ec7f2121ea3efe9488e906f46 (opens in a new tab)
- https://git.kernel.org/stable/c/0f17d2e3dd9cda3ee6d94033d5e5489af168920d (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-103789 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98849)Record last updated .