SB20260918361 - Out-of-bounds read in Linux kernel ulp srp driver
Published: September 18, 2026
Security Bulletin ID
SB20260918361
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-90307)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.
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