Answer in brief
CVE-2024-42318 records a High severity (CVSS 8.8) vulnerability in landlock: Don't lose track of restrictions on cred_transfer. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=385975dca53eb41031d0cbd1de318eb1bc5d6bb9 <916c648323fa53b89eedb34a0988ddaf01406117 || >=385975dca53eb41031d0cbd1de318eb1bc5d6bb9 <0d74fd54db0bd0c0c224bef0da8fc95ea9c9f36c || >=385975dca53eb41031d0cbd1de318eb1bc5d6bb9 <16896914bace82d7811c62f3b6d5320132384f49 || >=385975dca53eb41031d0cbd1de318eb1bc5d6bb9 <b14cc2cf313bd29056fadbc8ecd7f957cf5791ff || >=385975dca53eb41031d0cbd1de318eb1bc5d6bb9 <39705a6c29f8a2b93cf5b99528a55366c50014d1 | 916c648323fa53b89eedb34a0988ddaf01406117, 0d74fd54db0bd0c0c224bef0da8fc95ea9c9f36c, 16896914bace82d7811c62f3b6d5320132384f49, b14cc2cf313bd29056fadbc8ecd7f957cf5791ff, 39705a6c29f8a2b93cf5b99528a55366c50014d1 |
| Linux/Linuxgeneric | 5.13 | Not reported |
Published upstream
Aug 17, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: landlock: Don't lose track of restrictions on cred_transfer When a process' cred struct is replaced, this _almost_ always invokes the cred_prepare LSM hook; but in one special case (when KEYCTL_SESSION_TO_PARENT updates the parent's credentials), the cred_transfer LSM hook is used instead. Landlock only implements the cred_prepare hook, not cred_transfer, so KEYCTL_SESSION_TO_PARENT causes all information on Landlock restrictions to be lost. This basically means that a process with the ability to use the fork() and keyctl() syscalls can get rid of all Landlock restrictions on itself. Fix it by adding a cred_transfer hook that does the same thing as the existing cred_prepare hook. (Implemented by having hook_cred_prepare() call hook_cred_transfer() so that the two functions are less likely to accidentally diverge in the future.)
Quoted source text, attributed separately from HOL analysis.