Medium [CVE-2026-102474] Heap out-of-bounds write in conv_escape via undersized Unicode escape reservation
This medium-severity Red Hat Linux advisory covers CVE-2026-102474; related products: Red Hat Enterprise Linux 6, Red Hat package: dash.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Summary
Heap out-of-bounds write in conv_escape via undersized Unicode escape reservation. Red Hat rates this moderate (CVSS 4).
Weakness: CWE-787.
Affected products named by the advisory: Red Hat Enterprise Linux 6; Red Hat package: dash.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Mitigation checklist
- No practical runtime mitigation is available in the shipped build. Do not pass untrusted data into dash printf/echo %b or into dash -c as a positional argument. The fix is to raise the CHECKSTRSPACE reservation at both printf call sites to 8. The later unaligned-access memcpy change in conv_escape does not enlarge that reservation and does not fix this issue.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.