CVE-2026-72033

Summary

In the Linux kernel, the following vulnerability has been resolved:

orangefs: keep the readdir entry size 64-bit in fill_from_part()

fill_from_part() computes the size of a directory entry in size_t but stores it in a __u32. An entry length near U32_MAX wraps it to a small value, bypasses the bounds check, and is then used to index the entry, reading far past the directory part – an out-of-bounds read that oopses the kernel.

Compute the size as a u64 so it cannot truncate; the bounds check then rejects the entry. The trailer is supplied by the userspace client.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux480e3e532e31666a18520a7964bb4095d7a16b9a < 1679780f482feeb82acb5995587d4fb1d1fe82fdaffected
LinuxLinux480e3e532e31666a18520a7964bb4095d7a16b9a < a72bbb43689591c9d36e3bb45c2d4e688cf92682affected
LinuxLinux480e3e532e31666a18520a7964bb4095d7a16b9a < 36723b28e3293047f087f4501f1ef4ead418dd84affected
LinuxLinux480e3e532e31666a18520a7964bb4095d7a16b9a < 07c05601a9a8e5d4481b2a4a16dc0e3c5bc63ad9affected
LinuxLinux480e3e532e31666a18520a7964bb4095d7a16b9a < fdf06a1b66ff39664b01c6bb6a2aa98d81e8ebe1affected
LinuxLinux480e3e532e31666a18520a7964bb4095d7a16b9a < 82fc886e244c76fadf05ef1958aaf8815478ccdeaffected
LinuxLinux480e3e532e31666a18520a7964bb4095d7a16b9a < e3d325c0bdb7bc5d1b4cc8d8441d79794cd03729affected
LinuxLinux480e3e532e31666a18520a7964bb4095d7a16b9a < 18227a6bc98bd0ba96ed3ce9d5b28776a5a28dfcaffected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References