CVE-2019-12454 — An issue was discovered in wcd9335_codec_enable_dec in sound/soc/codecs/wcd9335

An issue was discovered in wcd9335_codec_enable_dec in sound/soc/codecs/wcd9335.c in the Linux kernel through 5.1.5. It uses kstrndup instead of kmemdup_nul, which allows attackers to have an unspecified impact via unknown vectors. NOTE: The vendor disputes this issues as not bei

01What is this vulnerability?

An issue was discovered in wcd9335_codec_enable_dec in sound/soc/codecs/wcd9335.c in the Linux kernel through 5.1.5. It uses kstrndup instead of kmemdup_nul, which allows attackers to have an unspecified impact via unknown vectors. NOTE: The vendor disputes this issues as not being a vulnerability because switching to kmemdup_nul() would only fix a security issue if the source string wasn't…

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-05-30T03:04:34.000Z
• Last modified: 2024-08-04T23:17:40.130Z

09References

• lkml.org — https://lkml.org/lkml/2019/5/29/705
• git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git/commit/?h=for-…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• bugzilla.suse.com — https://bugzilla.suse.com/show_bug.cgi?id=1136963#c1
• support.f5.com — https://support.f5.com/csp/article/K13523672
• support.f5.com — https://support.f5.com/csp/article/K13523672?utm_source=f5support&amp%3Butm_medi…