CVE-2024-40983: tipc: force a dst refcount before doing decryption
First published: Fri Jul 12 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: tipc: force a dst refcount before doing decryption As it says in commit 3bc07321ccc2 ("xfrm: Force a dst refcount before entering the xfrm type handlers"): "Crypto requests might return asynchronous. In this case we leave the rcu protected region, so force a refcount on the skb's destination entry before we enter the xfrm type input/output handlers." On TIPC decryption path it has the same problem, and skb_dst_force() should be called before doing decryption to avoid a possible crash. Shuang reported this issue when this warning is triggered: [] WARNING: include/net/dst.h:337 tipc_sk_rcv+0x1055/0x1ea0 [tipc] [] Kdump: loaded Tainted: G W --------- - - 4.18.0-496.el8.x86_64+debug [] Workqueue: crypto cryptd_queue_worker [] RIP: 0010:tipc_sk_rcv+0x1055/0x1ea0 [tipc] [] Call Trace: [] tipc_sk_mcast_rcv+0x548/0xea0 [tipc] [] tipc_rcv+0xcf5/0x1060 [tipc] [] tipc_aead_decrypt_done+0x215/0x2e0 [tipc] [] cryptd_aead_crypt+0xdb/0x190 [] cryptd_queue_worker+0xed/0x190 [] process_one_work+0x93d/0x17e0
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.10.221 | 5.10.221 |
| redhat/kernel | <5.15.162 | 5.15.162 |
| redhat/kernel | <6.1.96 | 6.1.96 |
| redhat/kernel | <6.6.36 | 6.6.36 |
| redhat/kernel | <6.9.7 | 6.9.7 |
| redhat/kernel | <6.10 | 6.10 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/2ebe8f840c7450ecbfca9d18ac92e9ce9155e269
- https://git.kernel.org/stable/c/3eb1b39627892c4e26cb0162b75725aa5fcc60c8
- https://git.kernel.org/stable/c/623c90d86a61e3780f682b32928af469c66ec4c2
- https://git.kernel.org/stable/c/6808b41371670c51feea14f63ade211e78100930
- https://git.kernel.org/stable/c/692803b39a36e63ac73208e0a3769ae6a2f9bc76
- https://git.kernel.org/stable/c/b57a4a2dc8746cea58a922ebe31b6aa629d69d93
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-40983
- https://nvd.nist.gov/vuln/detail/CVE-2024-40983
- https://launchpad.net/bugs/cve/CVE-2024-40983
- https://security-tracker.debian.org/tracker/CVE-2024-40983
- https://ubuntu.com/security/CVE-2024-40983
- https://git.kernel.org/linus/2ebe8f840c7450ecbfca9d18ac92e9ce9155e269
- https://access.redhat.com/errata/RHSA-2024:5928
- https://access.redhat.com/errata/RHSA-2024:6268
- https://access.redhat.com/errata/RHSA-2024:6267
- https://access.redhat.com/errata/RHSA-2024:8870
- https://access.redhat.com/errata/RHSA-2024:8856
- https://bugzilla.redhat.com/show_bug.cgi?id=2297567
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