Release Date: | 2025-04-16 | |
Impact: | Moderate | What is this? |
In the Linux kernel, the following vulnerability has been resolved:
net: fix geneve_opt length integer overflow
struct geneve_opt uses 5 bit length for each single option, which
means every vary size option should be smaller than 128 bytes.
However, all current related Netlink policies cannot promise this
length condition and the attacker can exploit a exact 128-byte size
option to *fake* a zero length option and confuse the parsing logic,
further achieve heap out-of-bounds read.
One example crash log is like below:
[ 3.905425] ==================================================================
[ 3.905925] BUG: KASAN: slab-out-of-bounds in nla_put+0xa9/0xe0
[ 3.906255] Read of size 124 at addr ffff888005f291cc by task poc/177
[ 3.906646]
[ 3.906775] CPU: 0 PID: 177 Comm: poc-oob-read Not tainted 6.1.132 #1
[ 3.907131] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
[ 3.907784] Call Trace:
[ 3.907925]
See more information about CVE-2025-22055 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
Base Score: | 7.1 |
Vector String: | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
Version: | 3.1 |
Attack Vector: | Local |
Attack Complexity: | Low |
Privileges Required: | Low |
User Interaction: | None |
Scope: | Unchanged |
Confidentiality Impact: | High |
Integrity Impact: | None |
Availability Impact: | High |
Platform | Errata | Release Date |
Oracle Linux version 10 (kernel) | ELSA-2025-8669 | 2025-07-03 |
Oracle Linux version 9 (kernel) | ELSA-2025-8643 | 2025-06-10 |
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