Detections
Analytics
CVE-2026-98726
high
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.
References
https://git.kernel.org/stable/c/fe6e003c132b7c204f63e7a7ec422904fa3141b6
https://git.kernel.org/stable/c/e5cdb0c0a51e8ff49914ae16ef5360010c40cc85
https://git.kernel.org/stable/c/63fa2d9c9c37020bd2703fe2a6a38027b5abeb15
https://git.kernel.org/stable/c/52c4294f3c26ec9db0e6f2e599096673d6f0f34d
https://git.kernel.org/stable/c/49e8a3224c91fd5fbf22f4adcca6c8209cfdd6fe
https://git.kernel.org/stable/c/3045128294d347fd38542ad6e174b1b34d9c0751
https://git.kernel.org/stable/c/08ab1e2dddf26248d5e6246046096b281cf5a319
https://git.kernel.org/stable/c/03a0c21f0fd7a872953aae5714303d8f38d1e567