Linux · 
Rocky Linux · Security advisory · May 30, 2026
Rocky Linux · Security advisory · May 30, 2026RLSA-2026:20597: glibc security update
RLSA-2026:20597, released May 30, 2026, fixes 3 CVEs in glibc (version 0:2.34-270.el9_8). None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
3
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.0039
33rd percentile
Priority of the 3 CVEs
Patch now 0
Urgent 0
High 2
Routine 1
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| glibc | rocky 9 | 0:2.34-270.el9_8 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-4046 | iconv crash due to assertion failure with untrusted input | 7.5 | 0.0039 | None reported |
| High | CVE-2026-4437 | gethostbyaddr and gethostbyaddr_r may incorrectly handle DNS response | 7.5 | 0.0035 | None reported |
| Routine | CVE-2026-4438 | gethostbyaddr and gethostbyaddr_r return invalid DNS hostnames | 6.5 | 0.0031 | None reported |
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