CVE-2024-26582: net: tls: fix use-after-free with partial reads and async decrypt
First published: Wed Feb 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: tls: fix use-after-free with partial reads and async decrypt tls_decrypt_sg doesn't take a reference on the pages from clear_skb, so the put_page() in tls_decrypt_done releases them, and we trigger a use-after-free in process_rx_list when we try to read from the partially-read skb.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.8 | 6.8 |
| Linux Kernel | >=6.0<6.1.79 | |
| Linux Kernel | >=6.2.0<6.6.18 | |
| Linux Kernel | >=6.7.0<6.7.6 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 |
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Reference Links
- https://git.kernel.org/stable/c/20b4ed034872b4d024b26e2bc1092c3f80e5db96
- https://git.kernel.org/stable/c/32b55c5ff9103b8508c1e04bfa5a08c64e7a925f
- https://git.kernel.org/stable/c/754c9bab77a1b895b97bd99d754403c505bc79df
- https://git.kernel.org/stable/c/d684763534b969cca1022e2a28645c7cc91f7fa5
- https://launchpad.net/bugs/cve/CVE-2024-26582
- https://lore.kernel.org/linux-cve-announce/2024022139-spruce-prelude-c358@gregkh/T/#u
- https://github.com/torvalds/linux/commit/32b55c5ff910
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2265529
- https://access.redhat.com/errata/RHSA-2024:1882
- https://access.redhat.com/errata/RHSA-2024:1881
- https://access.redhat.com/errata/RHSA-2024:2394
- https://access.redhat.com/security/cve/CVE-2024-26582
- https://bugzilla.redhat.com/show_bug.cgi?id=2265518
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26582
- https://nvd.nist.gov/vuln/detail/CVE-2024-26582
- https://security-tracker.debian.org/tracker/CVE-2024-26582
- https://ubuntu.com/security/CVE-2024-26582
- https://git.kernel.org/linus/32b55c5ff9103b8508c1e04bfa5a08c64e7a925f
Frequently Asked Questions
What is the severity of CVE-2024-26582?
CVE-2024-26582 has a high severity rating due to the potential for a use-after-free vulnerability in the Linux kernel.
How do I fix CVE-2024-26582?
To fix CVE-2024-26582, update the kernel to version 6.8 or a later version for Red Hat, or apply the recommended patches for Debian versions listed.
Which systems are affected by CVE-2024-26582?
CVE-2024-26582 affects certain versions of the Linux kernel, specifically between 6.0 and 6.1.79, as well as specific versions within 6.2.0 to 6.7.6.
What does the CVE-2024-26582 vulnerability impact?
The CVE-2024-26582 vulnerability impacts the network transport layer due to improper handling of TLS decryption resulting in potential memory safety issues.
Is CVE-2024-26582 actively being exploited?
There is currently no public information indicating that CVE-2024-26582 is being actively exploited in the wild, but it should be patched promptly.
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