Out-of-bounds read in Linux kernel - CVE-2026-90307
Published: September 18, 2026
Vulnerability identifier: #VU151174
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90307
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in the SRP response-processing handlers when processing truncated SRP requests. A remote attacker can send a crafted truncated SRP_CRED_REQ or SRP_AER_REQ to disclose sensitive information.
Exploitation requires an SRP target to advertise a small max_ti_iu_len value during login.
Affected software
Linux kernel
How to mitigate CVE-2026-90307
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/001adf2fe87d1ab677c014a97467bbea5153ae5f
- https://git.kernel.org/stable/c/0e7ba617514902501514d577647d866e670dad90
- https://git.kernel.org/stable/c/138eb2f0ef02adfe6ad126afad5b54c56b5046ee
- https://git.kernel.org/stable/c/3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7
- https://git.kernel.org/stable/c/3f7fdf561f1ec3b523c39708df00bd808671668d
- https://git.kernel.org/stable/c/961ac0f0c5e414abdd6b33fae84b311d9fde0bd0
- https://git.kernel.org/stable/c/dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cd
- https://git.kernel.org/stable/c/fa1b33fdab3e79dce83721ead3220200a2dbec22