CVE-2026-72155
CVE CVE-2026-72155EUVD EUVD-2026-58913Published 2026-08-15T05:53:25.000ZLast changed 2026-08-17T05:09:15.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: mtd: spi-nor: swp: Improve locking user experience In the case of the first block being locked (or the few first blocks), if the user want to fully unlock the device it has two possibilities: - either it asks to unlock the entire device, and this works; - or it asks to unlock just the block(s) that are currently locked, which fails. It fails because the conditions "can_be_top" and "can_be_bottom" are true. Indeed, in this case, we unlock everything, so the TB bit does not matter. However in the current implementation, use_top would be true (as this is the favourite option) and lock_len, which in practice should be reduced down to 0, is set to "nor->params->size - (ofs + len)" which is a positive number. This is wrong. An easy way is to simply add an extra condition. In the unlock() path, if we can achieve the same result from both sides, it means we unlock everything and lock_len must simply be 0. A comment is added to clarify that logic.
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: 6.18.40; 3dd8012a8eeb3702fa17450ec1a16a3f38af138d <e1d456b26bf23e30db305a6184e8abd9ab68bbf2; patch: 7.1.5; 3dd8012a8eeb3702fa17450ec1a16a3f38af138d <6110ab5ffd84e8daa654652446a03ce2f77580a7; patch: 0; patch: 6.1.178; patch: 6.6.145; 3dd8012a8eeb3702fa17450ec1a16a3f38af138d <dc341272cf8e15a2c511db3c4df5dab8adf70ad0; 3dd8012a8eeb3702fa17450ec1a16a3f38af138d <9a0d8dec3d11ca95d67537ea8fa6ee2730a5038a; 3dd8012a8eeb3702fa17450ec1a16a3f38af138d <c0806df5cf806545160f3fdac3c888926ceac557; patch: 6.12.97; 3dd8012a8eeb3702fa17450ec1a16a3f38af138d <12d4d69221159e6d0e72400ec81195d691169b53; 4.6; patch: 7.2
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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