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CVE-2026-98726

UnknownEPSS 0.20%

Last modified

CVE-2026-98726 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: nvme-multipath: fix underflow in ANA log bounds checks The number of ANA groups advertised through Identify Controller sizes the ANA log buffer. The ANA log header and group descriptors independently supply the number of groups and namespace IDs to parse. Both bounds checks subtract an untrusted object size from ana_log_size before comparing the current offset. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-multipath: fix underflow in ANA log bounds checks The number of ANA groups advertised through Identify Controller sizes the ANA log buffer. The ANA log header and group descriptors independently supply the number of groups and namespace IDs to parse. Both bounds checks subtract an untrusted object size from ana_log_size before comparing the current offset. If the object is larger than the buffer, the size_t subtraction underflows and lets the parser read beyond ana_log_buf. Check the current offset before the first subtraction and compare each object size with the remaining buffer instead. This rejects inconsistent ANA data before dereferencing a truncated group descriptor or walking an oversized namespace ID array.

Metrics

EPSS Probability
0.20%

9.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 0d0b660f214dc4905db7b6bc998bad0c16dfb1ba, < 52c4294f3c26ec9db0e6f2e599096673d6f0f34d; >= 0d0b660f214dc4905db7b6bc998bad0c16dfb1ba, < fe6e003c132b7c204f63e7a7ec422904fa3141b6; >= 0d0b660f214dc4905db7b6bc998bad0c16dfb1ba, < 08ab1e2dddf26248d5e6246046096b281cf5a319; >= 0d0b660f214dc4905db7b6bc998bad0c16dfb1ba, < 3045128294d347fd38542ad6e174b1b34d9c0751; >= 0d0b660f214dc4905db7b6bc998bad0c16dfb1ba, < 03a0c21f0fd7a872953aae5714303d8f38d1e567; >= 0d0b660f214dc4905db7b6bc998bad0c16dfb1ba, < 49e8a3224c91fd5fbf22f4adcca6c8209cfdd6fe; >= 0d0b660f214dc4905db7b6bc998bad0c16dfb1ba, < e5cdb0c0a51e8ff49914ae16ef5360010c40cc85; >= 0d0b660f214dc4905db7b6bc998bad0c16dfb1ba, < 63fa2d9c9c37020bd2703fe2a6a38027b5abeb15
LinuxLinux4.19

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98726?
In the Linux kernel, the following vulnerability has been resolved: nvme-multipath: fix underflow in ANA log bounds checks The number of ANA groups advertised through Identify Controller sizes the ANA log buffer. The ANA log header and group descriptors independently supply the number of groups and namespace IDs to parse. Both bounds checks subtract an untrusted object size from ana_log_size before comparing the current offset. If the object is larger than the buffer, the size_t subtraction underflows and lets the parser read beyond ana_log_buf. Check the current offset before the first subtraction and compare each object size with the remaining buffer instead. This rejects inconsistent ANA data before dereferencing a truncated group descriptor or walking an oversized namespace ID array.
How severe is CVE-2026-98726?
Severity scoring for CVE-2026-98726 is pending analysis. The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98726?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST