CVE-2026-64522
CVE CVE-2026-64522EUVD EUVD-2026-48866Published 2026-07-25T09:14:47.000ZLast changed 2026-08-05T12:42:35.000ZCVSS 8.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA mlx5e_xfrm_add_state() handles acquire-flow temporary SAs by allocating software state and skipping hardware offload setup. That path jumps to the common success label before taking the eswitch mode block. After tunnel-mode validation was moved earlier, the common success label unconditionally calls mlx5_eswitch_unblock_mode(). For acquire SAs, this decrements esw->offloads.num_block_mode without a matching increment. Return directly after installing the acquire SA offload handle, so only the paths that successfully called mlx5_eswitch_block_mode() call the matching unblock.
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 993c4ba71596c30418ba5a0ddcf4f9c2f431466a; patch: 0; patch: 7.1; 22239eb258bc1e6ccdb2d3502fce1cc2b2a88386 <ecafd8284e527666e83261e6e57a7c7341d591cb; 22239eb258bc1e6ccdb2d3502fce1cc2b2a88386 <abe003b33223ff33552f291644bf35d9c2f992fb; 22239eb258bc1e6ccdb2d3502fce1cc2b2a88386 <b5bd4249e430f5963d559708ee96a671716d2400; patch: 6.18.34; 6.18; 6.17.4 <6.18; patch: 7.0.11
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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