CVE-2026-64361In the Linux kernel, the following vulnerability has been resolved: hfs/hfsplus: fix u32 overflow in check_and_correct_requested_length check_and_correct_requested_length() compares (off + len) again…
Updated under an hour ago ()
Does this affect you?
It affects linux_kernel. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: hfs/hfsplus: fix u32 overflow in check_and_correct_requested_length check_and_correct_requested_length() compares (off + len) against node_size using u32 arithmetic. When the caller passes a large len value (e.g. from an underflowed subtraction in hfs_brec_remove()), off + len can wrap past 2^32 and produce a small result, causing the bounds check to pass when it should fail. For example, with off=14 and len=0xFFFFFFF2 (underflowed from data_off - keyoffset - size in hfs_brec_remove), off + len wraps to 6, which is less than a typical node_size of 512, so the check passes and the subsequent memmove reads ~4GB past the node buffer. Fix this by widening the addition to u64 before comparing against node_size. This prevents the u32 wrap while keeping the logic straightforward.
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-191
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Sep 4, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 5.4.297 before 5.5; from 5.10.241 before 5.10.261; from 5.15.190 before 5.15.212; from 6.1.149 before 6.1.178; from 6.6.103 before 6.6.145; from 6.12.43 before 6.12.97; from 6.15.11 before 6.16; from 6.16.2 before 6.18.40; and 1 more ranges | NVD |
References
- https://git.kernel.org/stable/c/607217f7ad419b53926f71e3f75001813bbc08adpatch
- https://git.kernel.org/stable/c/671c3fcc2ad31c1311ea6414382a2d95104ae1b9patch
- https://git.kernel.org/stable/c/7399c3baee7bb622a92f0b895cd4d3009a693f2bpatch
- https://git.kernel.org/stable/c/966cb76fb2857a4242cab6ea2ea17acf818a3da7patch
- https://git.kernel.org/stable/c/b6a481642ea1977be2f84dc08c5affd742c177e7patch
- https://git.kernel.org/stable/c/c25d3c931a63e762fcaa9cb125b901c53b62403fpatch
- https://git.kernel.org/stable/c/c8dd112173c02adf539fe2ad34a45f5e0068780dpatch
- https://git.kernel.org/stable/c/fc9d1447ca3cdc78d2e4ace1ce1f3a7c77ca08b1patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.