CVE-2026-98117

CVE CVE-2026-98117EUVD EUVD-2026-86948Published 2026-09-25T10:36:02.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Fix potential UAF/KASAN warning Currently, trace_cachefiles_coherency() is being passed a pointer to a __be64 lain over the coherency data in struct cachefiles_xattr so that it can display the first 8 bytes. However, the data is of variable length and could even be 0 bytes. This could lead to a UAF or KASAN warning. Fix this by making sure the buffer has room for at least 8 bytes and that those 8 bytes are pre-cleared. Further, those bytes are not 8-byte aligned, so fix the tracepoint to extract the data as four 2-byte words (they are 2-byte aligned) and reassemble the __be64. The compiler will convert this into a single 8-byte load where the CPU supports it.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 229105e5cfd9832a9ef1368c96e0098ec3a5fbf0 <93488ea378b4427598cace558236c110515d743b; patch: 6.18.53; 6.14; patch: 7.2.7; patch: 0; patch: 7.3-rc3; 229105e5cfd9832a9ef1368c96e0098ec3a5fbf0 <68d459e6e609c31f96a203dd6eec60c634f155e1; 229105e5cfd9832a9ef1368c96e0098ec3a5fbf0 <a67632c8c2688d6e0091529bcefe54bc5ee80e9b

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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