CVE-2026-43262

Description

In the Linux kernel, the following vulnerability has been resolved: gfs2: fiemap page fault fix In gfs2_fiemap(), we are calling iomap_fiemap() while holding the inode glock. This can lead to recursive glock taking if the fiemap buffer is memory mapped to the same inode and accessing it triggers a page fault. Fix by disabling page faults for iomap_fiemap() and faulting in the buffer by hand if necessary. Fixes xfstest generic/742.

References

• https://git.kernel.org/stable/c/2e121c53b581e40397ae08090a7af4ed10781fbc
• https://git.kernel.org/stable/c/5d2c4f182ea8516de8682e2b60411c03df00e3ea
• https://git.kernel.org/stable/c/5d5d9ec957bfa1eb2b05861c19f5d701dd006db7
• https://git.kernel.org/stable/c/9d15fee888f0e8938c9aeed71ec9c2cbba0c88ab
• https://git.kernel.org/stable/c/cead3bebf3e318578b8a86a5472015d713d2a8a8