CVE-2026-22990
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BaseFortify

Publication date: 2026-01-23

Last updated on: 2026-04-27

Assigner: kernel.org

Description
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.
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Meta Information
Published
2026-01-23
Last Modified
2026-04-27
Generated
2026-06-16
AI Q&A
2026-01-23
EPSS Evaluated
2026-06-15
NVD
CVE-2026-22990
Affected Vendors & Products
Showing 17 associated CPEs
Vendor Product Version / Range
linux linux_kernel 2.6.34
linux linux_kernel 2.6.34
linux linux_kernel 2.6.34
linux linux_kernel 2.6.34
linux linux_kernel 2.6.34
linux linux_kernel 2.6.34
linux linux_kernel 2.6.34
linux linux_kernel From 5.11 (inc) to 5.15.198 (exc)
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 6.13 (inc) to 6.18.6 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.121 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.66 (exc)
linux linux_kernel From 2.6.34.1 (inc) to 5.10.248 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.161 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-617 The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
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Executive Summary

This vulnerability in the Linux kernel's libceph component involves an overzealous BUG_ON check in the osdmap_apply_incremental() function. If the osdmap is maliciously corrupted so that the incremental osdmap epoch differs from what is expected, the kernel would trigger a BUG (a critical error). The fix replaces this behavior by simply declaring the incremental osdmap invalid instead of causing a BUG.

Impact Analysis

If exploited, this vulnerability could cause the Linux kernel to encounter a critical error (BUG) due to corrupted osdmap data, potentially leading to system instability or crashes. The fix prevents such crashes by handling corrupted incremental osdmap data more gracefully.

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