CVE-2026-93053
CVE CVE-2026-93053EUVD EUVD-2026-82163Published 2026-09-17T16:10:42.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: speakup: keyhelp: guard letter_offsets possible out-of-range indexing help_init() builds letter_offsets[] by using the first byte of each function name as an index via `(start & 31) - 1`. If function_names are overridden from sysfs (root) with a name starting outside [a–z], the index underflows or exceeds the array, leading to OOB write. Function names can be overridden with the following commands as root: modprobe speakup_soft echo "0 _bad" > /sys/accessibility/speakup/i18n/function_names # then press Insert+2 on /dev/tty This fix checks the first letter in help_init(), and if it is not in the [a–z] range the function returns an error to the caller. Eventually this error is propagated to drivers/accessibility/speakup/main.c:2217, which causes a bleep sound.
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 c6e3fd22cd538365bfeb82997d5b89562e077d42 <6b39969c724d39b6062efa354dc2d38442bfd021; c6e3fd22cd538365bfeb82997d5b89562e077d42 <900cd6e5ef46bd15153762fb26bb03f874fccc52; 2.6.37; patch: 7.2.6; patch: 6.12.110; c6e3fd22cd538365bfeb82997d5b89562e077d42 <fd339b9ef0accb2c24a5285df842552ebf5eb146; patch: 6.1.188; c6e3fd22cd538365bfeb82997d5b89562e077d42 <5310334762c3f08f51dc2414344dd47492c07d1d; patch: 5.10.270; c6e3fd22cd538365bfeb82997d5b89562e077d42 <2e91ab73f9beb659f581e2a6a09f79ace1140905; patch: 5.15.221; c6e3fd22cd538365bfeb82997d5b89562e077d42 <6a19ad4d68c95185308cd9e5d169b10a2cf236c8; patch: 0; patch: 6.18.52; patch: 6.6.157; c6e3fd22cd538365bfeb82997d5b89562e077d42 <ca4489b3e54666a7cac7294e71a3cf64e5e95286; c6e3fd22cd538365bfeb82997d5b89562e077d42 <d7deb90c4cd086cb111f0ecc9da021218fbde1b0; patch: 7.3-rc1
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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