Bug 2265518 (CVE-2024-26582) - CVE-2024-26582 kernel: tls: use-after-free with partial reads and async decrypt
Summary: CVE-2024-26582 kernel: tls: use-after-free with partial reads and async decrypt
Keywords:
Status: NEW
Alias: CVE-2024-26582
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2265529
Blocks: 2265516
TreeView+ depends on / blocked
 
Reported: 2024-02-22 14:28 UTC by Patrick Del Bello
Modified: 2024-05-02 22:50 UTC (History)
51 users (show)

Fixed In Version: kernel 6.8-rc5
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free vulnerability was found in the tls subsystem of the Linux kernel. The tls_decrypt_sg() function doesn't take references on the pages from clear_skb, so the put_page() in tls_decrypt_done() releases them and a use-after-free can be triggered in process_rx_list when trying to read from the partially-read skb. This issue could lead to a denial of service condition or code execution.
Clone Of:
Environment:
Last Closed:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2024:2634 0 None None None 2024-05-01 01:22:32 UTC
Red Hat Product Errata RHBA-2024:2650 0 None None None 2024-05-02 00:15:20 UTC
Red Hat Product Errata RHBA-2024:2686 0 None None None 2024-05-02 22:50:25 UTC
Red Hat Product Errata RHSA-2024:1881 0 None None None 2024-04-18 02:28:13 UTC
Red Hat Product Errata RHSA-2024:1882 0 None None None 2024-04-18 01:47:07 UTC
Red Hat Product Errata RHSA-2024:2394 0 None None None 2024-04-30 10:15:44 UTC

Description Patrick Del Bello 2024-02-22 14:28:54 UTC 
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.
Comment 1 Mauro Matteo Cascella 2024-02-22 15:15:08 UTC 
Kernel security advisory:
https://lore.kernel.org/linux-cve-announce/2024022139-spruce-prelude-c358@gregkh/T/#u

Upstream fix:
https://github.com/torvalds/linux/commit/32b55c5ff910
Comment 2 Mauro Matteo Cascella 2024-02-22 15:17:13 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2265529]
Comment 12 errata-xmlrpc 2024-04-18 01:47:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:1882 https://access.redhat.com/errata/RHSA-2024:1882
Comment 13 errata-xmlrpc 2024-04-18 02:28:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:1881 https://access.redhat.com/errata/RHSA-2024:1881
Comment 14 errata-xmlrpc 2024-04-30 10:15:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2394 https://access.redhat.com/errata/RHSA-2024:2394
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