Bug 2437998 (CVE-2026-2240)

Summary: CVE-2026-2240 janet-lang: janet-lang: Denial of service via out-of-bounds read in janetc_pop_funcdef
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A denial of service flaw was found in janet-lang. A local attacker could exploit an out-of-bounds read vulnerability in the `janetc_pop_funcdef` function within the `src/core/compile.c` file, which could lead to a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2438190, 2438189    
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Description OSIDB Bzimport 2026-02-09 16:01:49 UTC 
A vulnerability has been found in janet-lang janet up to 1.40.1. The impacted element is the function janetc_pop_funcdef of the file src/core/compile.c. Such manipulation leads to out-of-bounds read. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The name of the patch is 4dd08a4cdef5b1c42d9a2c19fc24412e97ef51d5. A patch should be applied to remediate this issue.