CVE-2026-80613
CVE CVE-2026-80613EUVD EUVD-2026-67489Published 2026-08-28T06:48:35.000ZLast changed 2026-08-29T06:21:21.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: veth: fix NAPI leak in XDP enable error path During XDP enablement in veth, if xdp_rxq_info_reg() or xdp_rxq_info_reg_mem_model() fails, the driver rolls back the changes. However, the rollback loop: for (i--; i >= start; i--) { decrements the loop index 'i' before the first iteration. This correctly skips unregistering the rxq for the failed index 'i' (as registration failed or was already cleaned up), but it also erroneously skips calling netif_napi_deli() for rq[i].xdp_napi. Since netif_napi_add() was already called for index 'i', this leaves a dangling napi_struct in the device's napi_list. When the veth device is later destroyed, the freed queue memory (which contains the leaked NAPI structure) can be reused. The subsequent device teardown iterates the NAPI list and corrupts the reallocated memory, leading to UAF. Fix this by explicitly deleting the NAPI association for the failed index 'i' before rolling back the successfully configured queues.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux b02e5a0ebb172c8276cea3151942aac681f7a4a6 <fc51373345e7e6ea73da2650cb497309c50b077a; patch: 5.15.212; b02e5a0ebb172c8276cea3151942aac681f7a4a6 <a9e6707322ef215d39d4655b176c094f45f0ab52; patch: 6.6.145; patch: 6.12.97; patch: 0; b02e5a0ebb172c8276cea3151942aac681f7a4a6 <4559770b2a241344d762719e674241fcc8528f02; patch: 7.2; b02e5a0ebb172c8276cea3151942aac681f7a4a6 <6739027cb72da26890edd424c77080d187b2a92e; 5.11; patch: 7.1.5; patch: 6.18.40; patch: 6.1.178; b02e5a0ebb172c8276cea3151942aac681f7a4a6 <4bd2e5dbe62334aae1182d0f0d260f334a49d739; b02e5a0ebb172c8276cea3151942aac681f7a4a6 <d3eb258ad398cc9402bab3a5e730cd7c5b34efad; b02e5a0ebb172c8276cea3151942aac681f7a4a6 <83090f5e7b54721d71875a6c224d2490b9e73050
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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