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Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp() l2cap_ecred_reconf_rsp() casts the incoming data to struct l2cap_ecred_conn_rsp (the ECRED *connection* response, 8 bytes with result at offset 6) instead of struct l2cap_ecred_reconf_rsp (2 bytes with result at offset 0). This causes two problems: - The sizeof(*rsp) length check requires 8 bytes instead of the correct 2, so valid L2CAP_ECRED_RECONF_RSP packets are rejected with -EPROTO. - rsp->result reads from offset 6 instead of offset 0, returning wrong data when the packet is large enough to pass the check. Fix by using the correct type. Also pass the already byte-swapped result variable to BT_DBG instead of the raw __le16 field.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-05 | Updated 2026-05-08 | Assigner Linux




HIGH: 7.1CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Product status

Default status
unaffected

15f02b91056253e8cdc592888f431da0731337b8 (git) before 21d3ba696918d6373233aac0b9d51fcabdedddc0
affected

15f02b91056253e8cdc592888f431da0731337b8 (git) before 3b94e62caa1dc1198d0d55d97bd710da1dee15d7
affected

15f02b91056253e8cdc592888f431da0731337b8 (git) before 111f74547eee8cfedfb854284e80f35c8a491186
affected

15f02b91056253e8cdc592888f431da0731337b8 (git) before dd3b221e21079ade8263fbb7176f3d55ad75d3b6
affected

15f02b91056253e8cdc592888f431da0731337b8 (git) before d90150c72d2e6a8a3079e88755dafcfbe91c746d
affected

15f02b91056253e8cdc592888f431da0731337b8 (git) before 5a1ea296f8589ce8f1e3141b2b123b34ad010e19
affected

15f02b91056253e8cdc592888f431da0731337b8 (git) before f110b8f58b254bf997cec1bd60701b7798e9bb82
affected

15f02b91056253e8cdc592888f431da0731337b8 (git) before 15145675690cab2de1056e7ed68e59cbd0452529
affected

Default status
affected

5.7
affected

Any version before 5.7
unaffected

5.10.253 (semver)
unaffected

5.15.203 (semver)
unaffected

6.1.167 (semver)
unaffected

6.6.130 (semver)
unaffected

6.12.78 (semver)
unaffected

6.18.20 (semver)
unaffected

6.19.10 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/21d3ba696918d6373233aac0b9d51fcabdedddc0

git.kernel.org/...c/3b94e62caa1dc1198d0d55d97bd710da1dee15d7

git.kernel.org/...c/111f74547eee8cfedfb854284e80f35c8a491186

git.kernel.org/...c/dd3b221e21079ade8263fbb7176f3d55ad75d3b6

git.kernel.org/...c/d90150c72d2e6a8a3079e88755dafcfbe91c746d

git.kernel.org/...c/5a1ea296f8589ce8f1e3141b2b123b34ad010e19

git.kernel.org/...c/f110b8f58b254bf997cec1bd60701b7798e9bb82

git.kernel.org/...c/15145675690cab2de1056e7ed68e59cbd0452529

cve.org (CVE-2026-43062)

nvd.nist.gov (CVE-2026-43062)

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