CVE-2024-26884
CVSS v3.1
7.8 (High)
EPSS
0.04 % (5th)
Affected Products
1
Advisories
35
NVD Status
Modified
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix hashtab overflow check on 32-bit arches
The hashtab code relies on roundup_pow_of_two() to compute the number of
hash buckets, and contains an overflow check by checking if the
resulting value is 0. However, on 32-bit arches, the roundup code itself
can overflow by doing a 32-bit left-shift of an unsigned long value,
which is undefined behaviour, so it is not guaranteed to truncate
neatly. This was triggered by syzbot on the DEVMAP_HASH type, which
contains the same check, copied from the hashtab code. So apply the same
fix to hashtab, by moving the overflow check to before the roundup.
Weaknesses
- CWE-119
- Improper Restriction of Operations within the Bounds of a Memory Buffer
- CVE Status
- PUBLISHED
- NVD Status
- Modified
- CNA
- kernel.org
- Published Date
-
2024-04-17 11:15:10
(5 months ago) - Updated Date
-
2024-06-27 12:15:22
(2 months ago)
Affected Products
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Configuration #1
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