CVE-2026-72428
CVE CVE-2026-72428EUVD EUVD-2026-59327Published 2026-08-15T05:56:44.000ZLast changed 2026-08-17T05:14:27.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix stack slot index in nospec checks check_stack_write_fixed_off() computes the byte slot for a fixed-offset stack write as -off - 1, and records each written byte in slot_type[] with (slot - i) % BPF_REG_SIZE. The Spectre v4 sanitization pre-check uses slot_type[i] instead. For a 4-byte write at fp-8 after the lower half of fp-8 has been zeroed, the pre-check scans bytes 0..3 and sees STACK_ZERO while the actual write updates bytes 7..4. That can leave the second half-slot write without nospec_result even though the bytes being overwritten still require sanitization. Use the same slot index in the sanitization pre-check that the write path uses when updating slot_type[].
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 patch: 6.12.97; patch: 7.1.5; 2039f26f3aca5b0e419b98f65dd36481337b86ee <475405593de2b796224c6297aece44f321195919; 2039f26f3aca5b0e419b98f65dd36481337b86ee <db8f1dcf5950b91886b9df4270bc816370d292c1; 2039f26f3aca5b0e419b98f65dd36481337b86ee <a71eb8f730a91271cf47ce291e785b6b7e54622f; 5.14; 2039f26f3aca5b0e419b98f65dd36481337b86ee <ca119656baa8f48a56e0c2f3ab63fdd33ca9e307; 2039f26f3aca5b0e419b98f65dd36481337b86ee <68b41e68a62299f26cb16af422b5c7d1c69dafd9; 2039f26f3aca5b0e419b98f65dd36481337b86ee <f1471aa76d74e0df3b2a90731ca0208f498c670b; 5.10.56 <5.10.261; f5893af2704eb763eb982f01d573f5b19f06b623; patch: 6.6.145; patch: 0; 0e9280654aa482088ee6ef3deadef331f5ac5fb0 <e62268e695075a481a6c4feeb022c19cf57422a6; patch: 5.15.212; 5.4.146 <5.5; patch: 7.2; 2039f26f3aca5b0e419b98f65dd36481337b86ee <d1d53aa30ab3b5ae89161c9cc840b3f7489ad386; 872968502114d68c21419cf7eb5ab97717e7b803; patch: 6.1.178; patch: 5.10.261; 5.13.8 <5.14; 0b27bdf02c400684225ee5ee99970bcbf5082282; 4.19.207 <4.20; patch: 6.18.40
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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