Bug 2476831 (CVE-2026-45185)
| Summary: | CVE-2026-45185 exim: Exim: Arbitrary code execution via use-after-free in BDAT body parsing. | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Exim. An unauthenticated remote attacker could exploit a use-after-free vulnerability in the BDAT body parsing path when a client sends a TLS close_notify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to heap corruption and allow the attacker to execute arbitrary code.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2476994, 2476995 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-05-12 21:03:33 UTC
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