Medium 5.5Published Oct 1, 2025

CVE-2025-39920pcmcia: Add error handling for add_interval() in do_validate_mem()

Updated under an hour ago (Oct 28, 2026, 2:50 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: pcmcia: Add error handling for add_interval() in do_validate_mem() In the do_validate_mem(), the call to add_interval() does not handle errors. If kmalloc() fails in add_interval(), it could result in a null pointer being inserted into the linked list, leading to illegal memory access when sub_interval() is called next. This patch adds an error handling for the add_interval(). If add_interval() returns an error, the function will return early with the error code.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	7b4884ca8853a638df0eb5d251d80d67777b8b1a builds before 5b60ed401b47897352c520bc724c85aa908dedcc; from 7b4884ca8853a638df0eb5d251d80d67777b8b1a before ae184024ef31423e5beb44cf4f52999bbcf2fe5b; from 7b4884ca8853a638df0eb5d251d80d67777b8b1a before 85be7ef8c8e792a414940a38d94565dd48d2f236; 7b4884ca8853a638df0eb5d251d80d67777b8b1a builds before 06b26e3099207c94b3d1be8565aedc6edc4f0a60; from 7b4884ca8853a638df0eb5d251d80d67777b8b1a before 8699358b6ac99b8ccc97ed9e6e3669ef8958ef7b; from 7b4884ca8853a638df0eb5d251d80d67777b8b1a before 289b58f8ff3198d091074a751d6b8f6827726f3e; from 7b4884ca8853a638df0eb5d251d80d67777b8b1a before 369bf6e241506583f4ee7593c53b92e5a9f271b4; 7b4884ca8853a638df0eb5d251d80d67777b8b1a builds before 4a81f78caa53e0633cf311ca1526377d9bff7479	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.34 before 5.4.299; from 5.5 before 5.10.243; from 5.11 before 5.15.192; from 5.16 before 6.1.151; from 6.2 before 6.6.105; from 6.7 before 6.12.46; from 6.13 before 6.16.6; 6.17; and 3 more ranges	NVD
debian debian_linux debian:debian_linux	11.0	NVD

References

References

https://git.kernel.org/stable/c/5b60ed401b47897352c520bc724c85aa908dedcc	patch
https://git.kernel.org/stable/c/ae184024ef31423e5beb44cf4f52999bbcf2fe5b	patch
https://git.kernel.org/stable/c/85be7ef8c8e792a414940a38d94565dd48d2f236	patch
https://git.kernel.org/stable/c/06b26e3099207c94b3d1be8565aedc6edc4f0a60	patch
https://git.kernel.org/stable/c/8699358b6ac99b8ccc97ed9e6e3669ef8958ef7b	patch
https://git.kernel.org/stable/c/289b58f8ff3198d091074a751d6b8f6827726f3e	patch
https://git.kernel.org/stable/c/369bf6e241506583f4ee7593c53b92e5a9f271b4	patch
https://git.kernel.org/stable/c/4a81f78caa53e0633cf311ca1526377d9bff7479	patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	mailing-list, third-party-advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	mailing-list, third-party-advisory

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.