Bluetooth: HIDP: Fix possible UAF
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: Fix possible UAF This fixes the following trace caused by not dropping l2cap_conn reference when user->remove callback is called: [ 97.809249] l2cap_conn_free: freeing conn ffff88810a171c00 [ 97.809907] CPU: 1 UID: 0 PID: 1419 Comm: repro_standalon Not tainted 7.0.0-rc1-dirty #14 PREEMPT(lazy) [ 97.809935] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014 [ 97.809947] Call Trace: [ 97.809954] [ 97.809961] dump_stack_lvl (lib/dump_stack.c:122) [ 97.809990] l2cap_conn_free (net/bluetooth/l2cap_core.c:1808) [ 97.810017] l2cap_conn_del (./include/linux/kref.h:66 net/bluetooth/l2cap_core.c:1821 net/bluetooth/l2cap_core.c:1798) [ 97.810055] l2cap_disconn_cfm (net/bluetooth/l2cap_core.c:7347 (discriminator 1) net/bluetooth/l2cap_core.c:7340 (discriminator 1)) [ 97.810086] ? __pfx_l2cap_disconn_cfm (net/bluetooth/l2cap_core.c:7341) [ 97.810117] hci_conn_hash_flush (./include/net/bluetooth/hci_core.h:2152 (discriminator 2) net/bluetooth/hci_conn.c:2644 (discriminator 2)) [ 97.810148] hci_dev_close_sync (net/bluetooth/hci_sync.c:5360) [ 97.810180] ? __pfx_hci_dev_close_sync (net/bluetooth/hci_sync.c:5285) [ 97.810212] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221) [ 97.810242] ? up_write (./arch/x86/include/asm/atomic64_64.h:87 (discriminator 5) ./include/linux/atomic/atomic-arch-fallback.h:2852 (discriminator 5) ./include/linux/atomic/atomic-long.h
CVE-2026-23462
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-23462
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"lessThan": "d955ccbf91ab74d76fe9e4eab2846a7d8a173075",
"versionType": "git"
},
{
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"lessThan": "18b1263ece6431bd78fa6b61faaef5281203741c",
"versionType": "git"
},
{
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"lessThan": "21a47a119f33df9bb157326846390d7e8e1b45ba",
"versionType": "git"
},
{
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"lessThan": "45ebe5b900200ac3e01f3470506a44a447825721",
"versionType": "git"
},
{
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"lessThan": "7c805b7d1e580eececcc92470292e3dbc42bc3f5",
"versionType": "git"
},
{
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"lessThan": "f8b6ed2f06d3baa44f347a0fa2af52433f386463",
"versionType": "git"
},
{
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"lessThan": "4d37fa7582aa960ba23e10a7a2596a29f37ad281",
"versionType": "git"
},
{
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"lessThan": "dbf666e4fc9bdd975a61bf682b3f75cb0145eedd",
"versionType": "git"
}
],
"programFiles": [
"net/bluetooth/hidp/core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.78",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.20",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.10",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/hidp/core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23462
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39861 · Revision 1
- Added to Heist Feed
- Publisher date