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Vulnerabilities

Vulnerability · CVE-2026-22990

In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() If the osdmap is (maliciously) corrupted such

Published Jan 23, 2026 · catalog updated Oct 19, 2026 · Linux Linux

Last checked Nov 8, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-22990. EPSS is 0.40%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.40%
Remediation
Version ranges on file
Affected products
vendor Linux Linux f24e9980eb860d8600cbe5ef3d2fd9295320d229 <e00c3f71b5cf75681dbd74ee3f982a99cb690c2b

In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() If the osdmap is (maliciously) corrupted such that the incremental osdmap epoch is different from what is expected, there is no need to BUG. Instead, just declare the incremental osdmap to be invalid.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux f24e9980eb860d8600cbe5ef3d2fd9295320d229 <e00c3f71b5cf75681dbd74ee3f982a99cb690c2bf24e9980eb860d8600cbe5ef3d2fd9295320d229 <e00c3f71b5cf75681dbd74ee3f982a99cb690c2b

How to fix CVE-2026-22990

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-22990. EPSS is 0.40%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux f24e9980eb860d8600cbe5ef3d2fd9295320d229 <e00c3f71b5cf75681dbd74ee3f982a99cb690c2b f24e9980eb860d8600cbe5ef3d2fd9295320d229 <e00c3f71b5cf75681dbd74ee3f982a99cb690c2b. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.40%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 23, 2026 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() If the osdmap is (maliciously) corrupted such that the incremental osdmap epoch is different from what is expected, there is no need to BUG. Instead, just declare the incremental osdmap to be invalid.

  2. Oct 19, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() If the osdmap is (maliciously) corrupted such that the incremental osdmap epoch is different from what is expected, there is no need to BUG. Instead, just declare the incremental osdmap to be invalid.

Sources

  • CVE.orgVulnerability recordCVE-2026-22990

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-22990

    30-day exploitation probability 0.40%

    first.org
  • EUVDVulnerability recordEUVD-2026-4287

    In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() If the osdmap is (maliciously) corrupted such that the incremental osdmap epoch is different from what is expected, there is no need to BUG. Inste

    euvd.enisa.europa.eu
  • urlscan.ioThreat intelligenceCVE-2026-22990
    urlscan.io

References

Freshness

Last verified in this catalog Nov 8, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 8, 2026
  • urlscan.ioNov 6, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 2, 2026