CVE-2026-80744netfilter: nf_tables_offload: suppress WARN_ON_ONCE for ENOMEM in abort path
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 93% 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: netfilter: nf_tables_offload: suppress WARN_ON_ONCE for ENOMEM in abort path In nft_flow_rule_offload_abort(), WARN_ON_ONCE(err) is triggered on every error during rollback, including -ENOMEM. Memory allocation failures are expected under low-memory conditions and do not indicate a kernel bug. Trace for example: nft_flow_offload_chain() // FLOW_BLOCK_BIND nft_flow_block_chain() nft_chain_offload_cmd() nft_block_offload_cmd() ->ndo_setup_tc() nsim_setup_tc() flow_block_cb_setup_simple() flow_block_cb_alloc() // fails to -ENOMEM The warning was reproduced on the 5.10 stable kernel under memory pressure via fault injection, but the underlying bug exists in mainline as well, as demonstrated by the ENOMEM trace above. The following splat was triggered during nf_tables transaction processing: WARNING: CPU: 0 PID: 8567 at net/netfilter/nf_tables_offload.c:532 nft_flow_rule_offload_abort net/netfilter/nf_tables_offload.c:532 [inline] WARNING: CPU: 0 PID: 8567 at net/netfilter/nf_tables_offload.c:532 nft_flow_rule_offload_commit+0x971/0xcd0 net/netfilter/nf_tables_offload.c:591 Modules linked in: CPU: 0 PID: 8567 Comm: syz-executor.0 Not tainted 5.10.260-syzkaller #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:nft_flow_rule_offload_abort net/netfilter/nf_tables_offload.c:532 [inline] RIP: 0010:nft_flow_rule_offload_commit+0x971/0xcd0 net/netfilter/nf_tables_offload.c:591 Call Trace: nf_tables_commit+0x3bd/0x4bd0 net/netfilter/nf_tables_api.c:8604 nfnetlink_rcv_batch+0xb1e/0x1f20 net/netfilter/nfnetlink.c:509 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:579 [inline] nfnetlink_rcv+0x3b3/0x420 net/netfilter/nfnetlink.c:597 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x6cd/0xa00 net/netfilter/af_netlink.c:1340 netlink_sendmsg+0x906/0xe10 net/netfilter/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] __sock_sendmsg+0x155/0x190 net/socket.c:663 ____sys_sendmsg+0x705/0x870 net/socket.c:2379 ___sys_sendmsg+0x100/0x170 net/socket.c:2433 __sys_sendmsg+0xe9/0x1c0 net/socket.c:2462 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 Change the condition to WARN_ON_ONCE(err && err != -ENOMEM) so that warnings are only emitted for unexpected errors. This aligns with the common kernel practice of not warning on -ENOMEM. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Timeline
ID reserved
By Linux
- 8 days later
· 8 days later
Published
- 2 months later
· 2 months 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)
- 0.18% · top 93% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 63b48c73ff567bbab1f940d6e8f3f48607077a13 – < 2319033c4bf8bdb275a9e4e1f7af9bf8a457ad79
- affected 63b48c73ff567bbab1f940d6e8f3f48607077a13 – < 6ee3803c22b72508c5baf1e5aecb21301b714be0
- affected 63b48c73ff567bbab1f940d6e8f3f48607077a13 – < 09bda4b6df222fd1819e8f188c3a6e90caf546d3
- affected 63b48c73ff567bbab1f940d6e8f3f48607077a13 – < 17c132e18ca5d1641ddbaed8d0e6ecfd1d38fa0b
- affected 63b48c73ff567bbab1f940d6e8f3f48607077a13 – < 7ce9851be6f2b019e96e105a9de99715aec6deb4
- affected 63b48c73ff567bbab1f940d6e8f3f48607077a13 – < 4a923fe60939a194777bc605036ce2147ab00c9d
- affected 63b48c73ff567bbab1f940d6e8f3f48607077a13 – < c23620a0fa5b1d80399f894c41a9f78bc29d6235
- affected 63b48c73ff567bbab1f940d6e8f3f48607077a13 – < d02f592064347e0c1e0d84f24941ad338838cc48
- affected 5.5
- unaffected < 5.5
- unaffected 5.10.266 – ≤ 5.10.*
- unaffected 5.15.217 – ≤ 5.15.*
- unaffected 6.1.184 – ≤ 6.1.*
- unaffected 6.6.153 – ≤ 6.6.*
- unaffected 6.12.105 – ≤ 6.12.*
- unaffected 6.18.46 – ≤ 6.18.*
- unaffected 7.1.10 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/2319033c4bf8bdb275a9e4e1f7af9bf8a457ad79 (opens in a new tab)
- https://git.kernel.org/stable/c/6ee3803c22b72508c5baf1e5aecb21301b714be0 (opens in a new tab)
- https://git.kernel.org/stable/c/09bda4b6df222fd1819e8f188c3a6e90caf546d3 (opens in a new tab)
- https://git.kernel.org/stable/c/17c132e18ca5d1641ddbaed8d0e6ecfd1d38fa0b (opens in a new tab)
- https://git.kernel.org/stable/c/7ce9851be6f2b019e96e105a9de99715aec6deb4 (opens in a new tab)
- https://git.kernel.org/stable/c/4a923fe60939a194777bc605036ce2147ab00c9d (opens in a new tab)
- https://git.kernel.org/stable/c/c23620a0fa5b1d80399f894c41a9f78bc29d6235 (opens in a new tab)
- https://git.kernel.org/stable/c/d02f592064347e0c1e0d84f24941ad338838cc48 (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-2026-70348 (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)
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[](https://cveledger.app/cve/CVE-2026-80744)Record last updated .