Kernel compromise via SCO socket use-after-free
Published Nov 5, 2024 · Updated Aug 19, 2026
Use-after-free in Linux Bluetooth SCO allows local users with an in-range peer to compromise kernel memory through a socket race. sco_sock_timeout retrieves conn->sk after taking sco_conn_lock even though another path can unlink and free that socket, then holds, writes, and invokes a callback through the stale object. An unprivileged local process must create and race an SCO connection while a Bluetooth peer is in range; successful exploitation exposes or corrupts kernel memory, while failure can crash the system.
Summary
What happened
Use-after-free in Linux Bluetooth SCO allows local users with an in-range peer to compromise kernel memory through a socket race. sco_sock_timeout retrieves conn->sk after taking sco_conn_lock even though another path can unlink and free that socket, then holds, writes, and invokes a callback through the stale object. An unprivileged local process must create and race an SCO connection while a Bluetooth peer is in range; successful exploitation exposes or corrupts kernel memory, while failure can crash the system.
The record
- CVE
- CVE-2024-50125
- Published
- Nov 5, 2024
- Updated
- Aug 19, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-416, T1068
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 5, 2024CVE publishedPublication date reported by the CVE source.
- Aug 19, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=37d7ae2b0578f2373674a755402ee722e96edc08
- Affected versionversion=4.14.263 <4.15
- Affected versionversion=4.19.207 <4.20
- Affected versionversion=48669c81a65628ef234cbdd91b9395952c7c27fe
- Affected versionversion=5.10.67 <5.10.265
- Affected versionversion=5.13.19 <5.14
- Affected versionversion=5.14.6 <5.15
- Affected versionversion=5.15
- Affected versionversion=5.4.148 <5.5
- Affected versionversion=a1073aad497d0d071a71f61b721966a176d50c08 <678386459ffc07d2fbfbfe33456013786975cfef
- Affected versionversion=b657bba82ff6a007d84fd076bd73b11131726a2b
- Affected versionversion=ba316be1b6a00db7126ed9a39f9bee434a508043 <1bf4470a3939c678fb822073e9ea77a0560bc6bb
- Affected versionversion=ba316be1b6a00db7126ed9a39f9bee434a508043 <74a466a15731a754bcd8b5a83c126b5122e15a45
- Affected versionversion=ba316be1b6a00db7126ed9a39f9bee434a508043 <80b05fbfa998480fb3d5299d93eab946f51e9c36
- Affected versionversion=ba316be1b6a00db7126ed9a39f9bee434a508043 <9ddda5d967e84796e7df1b54a55f36b4b9f21079
- Affected versionversion=ba316be1b6a00db7126ed9a39f9bee434a508043 <d30803f6a972b5b9e26d1d43b583c7ec151de04b
- Affected versionversion=ec1f74319bb35c1c90c25014ec0f6ea6c3ca2134
- Affected versionversion=fea63ccd928c01573306983346588b26cffb5572
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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