Linux · 
Ubuntu · Package update · April 28, 2026
Ubuntu · Package update · April 28, 2026libc6-dev-amd64 2.43-2ubuntu2.3: libc6-dev-amd64 2.43-2ubuntu2.3 for Ubuntu 26.04.1 LTS (resolute)
libc6-dev-amd64 2.43-2ubuntu2.3, released April 28, 2026, fixes 5 CVEs in libc6-dev-amd64. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
5
None rated Critical
Exploited
0
None reported
Highest CVSS
9.8
Base score, 0 to 10
Highest EPSS
0.0050
43rd percentile
Priority of the 5 CVEs
Patch now 0
Urgent 0
High 4
Routine 1
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| libc6-dev-amd64 | Ubuntu 26.04.1 LTS (resolute) | 2.43-2ubuntu2.3 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-5450 | scanf %mc off-by-one heap buffer overflow | 9.8 | 0.0050 | None reported |
| High | CVE-2026-4046 | iconv crash due to assertion failure with untrusted input | 7.5 | 0.0039 | None reported |
| High | CVE-2026-5928 | Static buffer overflow in deprecated nis_local_principal | 7.5 | 0.0037 | None reported |
| High | CVE-2026-5435 | Potential buffer overflow in ns_sprintrrf TSIG handling path | 8.6 | 0.0024 | None reported |
| Routine | CVE-2026-6238 | glibc-langpack-af: glibc: glibc: Application crash or uninitialized memory read via crafted DNS response | 6.5 | 0.0036 | None reported |
Showing 1 to 5 of 5
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