- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 88% 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: SUNRPC: check rpc_sockaddr2uaddr() return value in rpcb_register_inet4/6 rpcb_register_inet4() and rpcb_register_inet6() store the result of rpc_sockaddr2uaddr() into map->r_addr without checking it for NULL. rpc_sockaddr2uaddr() returns NULL when its final kstrdup() fails, and the unchecked NULL is then carried into the synchronous RPCBPROC_SET encode path: rpcb_register_call() -> rpc_call_sync() -> rpcb_enc_getaddr() -> encode_rpcb_string(), whose first statement is strlen(string), dereferencing NULL and oopsing the kernel. The crash reproduces under failslab on v6.12; with KASAN the NULL dereference surfaces as a fault on the shadow of address zero: Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000 [#1] PREEMPT SMP KASAN RIP: 0010:strlen (lib/string.c:409) Call Trace: encode_rpcb_string (net/sunrpc/rpcb_clnt.c:890) rpcb_enc_getaddr (net/sunrpc/rpcb_clnt.c:910) rpcauth_wrap_req_encode (net/sunrpc/auth.c:745) call_encode (net/sunrpc/clnt.c:1966) __rpc_execute (net/sunrpc/sched.c:952) rpc_run_task (net/sunrpc/clnt.c:1243) rpc_call_sync (net/sunrpc/clnt.c:1272) rpcb_v4_register (net/sunrpc/rpcb_clnt.c:500) svc_generic_rpcbind_set nfsd_rpcbind_set svc_register svc_setup_socket svc_addsock write_ports nfsctl_transaction_write vfs_write The crash is reachable when an in-kernel RPC service (nfsd, lockd, nfs-callback) registers with the local rpcbind under enough memory pressure for the small GFP_KERNEL kstrdup() in rpc_sockaddr2uaddr() to fail. The asynchronous getport path already handles this exact failure mode by returning -ENOMEM; only the two register helpers omit the check. Mirror that handling: bail out with -ENOMEM when rpc_sockaddr2uaddr() returns NULL, before the address is fed into the encoder.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 days 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)
- 0.22% · top 88% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected d77385f23830ee6c400569bac8b37e6eb3b7d360 – < 04441b792ec40eb66349b5fab34b6a2090b5b2dd
- affected d77385f23830ee6c400569bac8b37e6eb3b7d360 – < 5a51c49ddb37b883566874aecc66bc5a2e617a96
- affected d77385f23830ee6c400569bac8b37e6eb3b7d360 – < 4a6095de8cb1858e05bdf70b3e7d6d7645c25041
- affected d77385f23830ee6c400569bac8b37e6eb3b7d360 – < 12bf3e0182ccdaf3b412756a756d3944a7dacaa9
- affected d77385f23830ee6c400569bac8b37e6eb3b7d360 – < 4e01022974355732e748ec8ebc97c558cb624ffe
- affected d77385f23830ee6c400569bac8b37e6eb3b7d360 – < cda4aacfb0bbf5c0f90fd0b42c72c749635d1368
- affected d77385f23830ee6c400569bac8b37e6eb3b7d360 – < eb476289c12cc22c8766f8a84eeb7ab46c4e8fb6
- affected d77385f23830ee6c400569bac8b37e6eb3b7d360 – < fd22370226a0d8109045d0831fd5aaadee921693
- affected 3.2
- unaffected < 3.2
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/04441b792ec40eb66349b5fab34b6a2090b5b2dd (opens in a new tab)
- https://git.kernel.org/stable/c/5a51c49ddb37b883566874aecc66bc5a2e617a96 (opens in a new tab)
- https://git.kernel.org/stable/c/4a6095de8cb1858e05bdf70b3e7d6d7645c25041 (opens in a new tab)
- https://git.kernel.org/stable/c/12bf3e0182ccdaf3b412756a756d3944a7dacaa9 (opens in a new tab)
- https://git.kernel.org/stable/c/4e01022974355732e748ec8ebc97c558cb624ffe (opens in a new tab)
- https://git.kernel.org/stable/c/cda4aacfb0bbf5c0f90fd0b42c72c749635d1368 (opens in a new tab)
- https://git.kernel.org/stable/c/eb476289c12cc22c8766f8a84eeb7ab46c4e8fb6 (opens in a new tab)
- https://git.kernel.org/stable/c/fd22370226a0d8109045d0831fd5aaadee921693 (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-2026-80305 (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-2026-89784)Record last updated .