CVE-2022-42895 — There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2cap_cor

There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_parse_conf_req function which can be used to leak kernel pointers remotely. We recommend upgrading past commit https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732

01What is this vulnerability?

There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_parse_conf_req function which can be used to leak kernel pointers remotely. We recommend upgrading past commit https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e https://www.google.com/url

02Affected products

No structured affected-product list available — see references below for vendor advisories.

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: 2022-11-23T15:15:10.557
• Last modified: 2026-10-14T19:16:52.190

09References

• github.com — https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2…
• kernel.dance — https://kernel.dance/#b1a2cd50c0357f243b7435a732b4e62ba3157a2e
• github.com — https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2…
• kernel.dance — https://kernel.dance/#b1a2cd50c0357f243b7435a732b4e62ba3157a2e
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/html/ssa-794697.html