CVE-2025-68355
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix exclusive map memory leak When excl_prog_hash is 0 and excl_prog_hash_size is non-zero, the map also needs to be freed. Otherwise, the map memory will not be reclaimed, just like the memory leak problem reported by syzbot [1]. syzbot reported: BUG: memory leak backtrace (crc 7b9fb9b4): map_create+0x322/0x11e0 kernel/bpf/syscall.c:1512 __sys_bpf+0x3556/0x3610 kernel/bpf/syscall.c:6131
Affected versions
Linux kernel versions
6.18
and later are affected. Fixed in
6.18.2,
6.19
and their respective stable series.
References
The following references provide additional information about CVE-2025-68355 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/688b745401ab16e2e1a3b504863f0a45fd345638
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PatchKernel patch commithttps://git.kernel.org/stable/c/f0022551745d72fc0e7bc8601234d690dee2178d
Frequently asked questions
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What is CVE-2025-68355?
CVE-2025-68355 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.18 onward and has been patched in 6.18.2 and 6.19. CVE-2025-68355 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-68355?
Yes — CVE-2025-68355 has been patched. Fixed versions include 6.18.2 and 6.19. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68355 actively exploited?
No — CVE-2025-68355 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.