CVE-2024-53091: bpf: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx
First published: Thu Nov 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: bpf: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx As the introduction of the support for vsock and unix sockets in sockmap, tls_sw_has_ctx_tx/rx cannot presume the socket passed in must be IS_ICSK. vsock and af_unix sockets have vsock_sock and unix_sock instead of inet_connection_sock. For these sockets, tls_get_ctx may return an invalid pointer and cause page fault in function tls_sw_ctx_rx. BUG: unable to handle page fault for address: 0000000000040030 Workqueue: vsock-loopback vsock_loopback_work RIP: 0010:sk_psock_strp_data_ready+0x23/0x60 Call Trace: ? __die+0x81/0xc3 ? no_context+0x194/0x350 ? do_page_fault+0x30/0x110 ? async_page_fault+0x3e/0x50 ? sk_psock_strp_data_ready+0x23/0x60 virtio_transport_recv_pkt+0x750/0x800 ? update_load_avg+0x7e/0x620 vsock_loopback_work+0xd0/0x100 process_one_work+0x1a7/0x360 worker_thread+0x30/0x390 ? create_worker+0x1a0/0x1a0 kthread+0x112/0x130 ? __kthread_cancel_work+0x40/0x40 ret_from_fork+0x1f/0x40 v2: - Add IS_ICSK check v3: - Update the commits in Fixes
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.15<6.6.62 | |
| Linux Kernel | >=6.7<6.11.9 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| Linux Kernel | =6.12-rc4 | |
| Linux Kernel | =6.12-rc5 | |
| Linux Kernel | =6.12-rc6 | |
| Linux Kernel | =6.12-rc7 | |
| debian/linux | <=6.1.129-1<=6.1.133-1 | 5.10.223-1 5.10.234-1 6.12.22-1 |
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Reference Links
- https://git.kernel.org/stable/c/a078a480ff3f43d74d8a024ae10c3c7daf6db149
- https://git.kernel.org/stable/c/6781cfa93a6a1b7f5be6819a5a2dd8f30f47ca26
- https://git.kernel.org/stable/c/44d0469f79bd3d0b3433732877358df7dc6b17b1
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53091
- https://nvd.nist.gov/vuln/detail/CVE-2024-53091
- https://launchpad.net/bugs/cve/CVE-2024-53091
- https://security-tracker.debian.org/tracker/CVE-2024-53091
- https://ubuntu.com/security/CVE-2024-53091
- https://git.kernel.org/linus/44d0469f79bd3d0b3433732877358df7dc6b17b1
Frequently Asked Questions
What is the severity of CVE-2024-53091?
CVE-2024-53091 has not been assigned a CVSS score yet, but it is related to security enhancements in the Linux kernel.
How do I fix CVE-2024-53091?
To fix CVE-2024-53091, update your Linux kernel to a version that includes the patch addressing this vulnerability.
Which versions of the Linux kernel are affected by CVE-2024-53091?
CVE-2024-53091 affects Linux kernel versions between 5.15 and 6.6.62, as well as several 6.12 release candidates.
What components are primarily impacted by CVE-2024-53091?
CVE-2024-53091 primarily impacts the BPF subsystem related to the implementation of TLS support in socket handling.
Is there a workaround for CVE-2024-53091?
No specific workarounds for CVE-2024-53091 are recommended; patching the kernel is the advised solution.
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