Answer in brief
CVE-2026-93053 records a Unknown severity vulnerability in speakup: keyhelp: guard letter_offsets possible out-of-range indexing. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c6e3fd22cd538365bfeb82997d5b89562e077d42 <fd339b9ef0accb2c24a5285df842552ebf5eb146 || >=c6e3fd22cd538365bfeb82997d5b89562e077d42 <900cd6e5ef46bd15153762fb26bb03f874fccc52 || >=c6e3fd22cd538365bfeb82997d5b89562e077d42 <6b39969c724d39b6062efa354dc2d38442bfd021 || >=c6e3fd22cd538365bfeb82997d5b89562e077d42 <2e91ab73f9beb659f581e2a6a09f79ace1140905 || >=c6e3fd22cd538365bfeb82997d5b89562e077d42 <d7deb90c4cd086cb111f0ecc9da021218fbde1b0 || >=c6e3fd22cd538365bfeb82997d5b89562e077d42 <5310334762c3f08f51dc2414344dd47492c07d1d || >=c6e3fd22cd538365bfeb82997d5b89562e077d42 <ca4489b3e54666a7cac7294e71a3cf64e5e95286 || >=c6e3fd22cd538365bfeb82997d5b89562e077d42 <6a19ad4d68c95185308cd9e5d169b10a2cf236c8 | fd339b9ef0accb2c24a5285df842552ebf5eb146, 900cd6e5ef46bd15153762fb26bb03f874fccc52, 6b39969c724d39b6062efa354dc2d38442bfd021, 2e91ab73f9beb659f581e2a6a09f79ace1140905, d7deb90c4cd086cb111f0ecc9da021218fbde1b0, 5310334762c3f08f51dc2414344dd47492c07d1d, ca4489b3e54666a7cac7294e71a3cf64e5e95286, 6a19ad4d68c95185308cd9e5d169b10a2cf236c8 |
| Linux/Linuxgeneric | 2.6.37 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.