NONE
CVE-2026-43393
Published: May 8, 2026· Updated: May 12, 2026
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.7th
Official Description
In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix chunk map leak in btrfs_map_block() after btrfs_chunk_map_num_copies()
Fix a chunk map leak in btrfs_map_block(): if we return early with -EINVAL,
we're not freeing the chunk map that we've just looked up.
Technical Analysis
CVE-2026-43393 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
Affected Vendors & Products
Mentioned vendors (from description):
Linux
CPE data not yet available in NVD for this CVE.
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
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NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
All References (4)
Quick Facts
CVE IDCVE-2026-43393
SeverityNONE
CISA KEVNo
EPSS (30d)0.02%
PublishedMay 8, 2026
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-43393 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.