CVE-2023-54033
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
bpf: fix a memory leak in the LRU and LRU_PERCPU hash maps
In the Linux kernel, the following vulnerability has been resolved: bpf: fix a memory leak in the LRU and LRU_PERCPU hash maps The LRU and LRU_PERCPU maps allocate a new element on update before locking the target hash table bucket. Right after that the maps try to lock the bucket. If this fails, then maps return -EBUSY to the caller without releasing the allocated element. This makes the element untracked: it doesn't belong to either of free lists, and it doesn't belong to the hash table, so can't be re-used; this eventually leads to the permanent -ENOMEM on LRU map updates, which is unexpected. Fix this by returning the element to the local free list if bucket locking fails.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 | affected | git | 79ea1a12fb9a8275b6e19d4ca625dd872dedcbb9 | Unavailable | None listed |
| 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 | affected | git | 1a9e80f757bbb1562d82e350afce2bb2f712cc3d | Unavailable | None listed |
| 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 | affected | git | 965e9cccbe6b9c7b379908cebcb5e3a47f20dd5e | Unavailable | None listed |
| 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 | affected | git | b34ffb0c6d23583830f9327864b9c1f486003305 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.11 | Unavailable | None listed |
| 5.15.115 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.31 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.3.5 | unaffected | semver | Unavailable | 6.3.* | None listed |
| 6.4 | unaffected | original_commit_for_fix | Unavailable | * | None listed |