CVE-2024-44965 Affecting kernel-syms package, versions <6.4.0-150600.23.25.1
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Test your applications- Snyk ID SNYK-SLES156-KERNELSYMS-8175086
- published 10 Oct 2024
- disclosed 9 Oct 2024
How to fix?
Upgrade SLES:15.6
kernel-syms
to version 6.4.0-150600.23.25.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-syms
package and not the kernel-syms
package as distributed by SLES
.
See How to fix?
for SLES:15.6
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
x86/mm: Fix pti_clone_pgtable() alignment assumption
Guenter reported dodgy crashes on an i386-nosmp build using GCC-11 that had the form of endless traps until entry stack exhaust and then #DF from the stack guard.
It turned out that pti_clone_pgtable() had alignment assumptions on the start address, notably it hard assumes start is PMD aligned. This is true on x86_64, but very much not true on i386.
These assumptions can cause the end condition to malfunction, leading to a 'short' clone. Guess what happens when the user mapping has a short copy of the entry text?
Use the correct increment form for addr to avoid alignment assumptions.
References
- https://www.suse.com/security/cve/CVE-2024-44965.html
- https://bugzilla.suse.com/1230221
- https://git.kernel.org/stable/c/18da1b27ce16a14a9b636af9232acb4fb24f4c9e
- https://git.kernel.org/stable/c/25a727233a40a9b33370eec9f0cad67d8fd312f8
- https://git.kernel.org/stable/c/41e71dbb0e0a0fe214545fe64af031303a08524c
- https://git.kernel.org/stable/c/4d143ae782009b43b4f366402e5c37f59d4e4346
- https://git.kernel.org/stable/c/5c580c1050bcbc15c3e78090859d798dcf8c9763
- https://git.kernel.org/stable/c/ca07aab70dd3b5e7fddb62d7a6ecd7a7d6d0b2ed
- https://git.kernel.org/stable/c/d00c9b4bbc442d99e1dafbdfdab848bc1ead73f6
- https://git.kernel.org/stable/c/df3eecb5496f87263d171b254ca6e2758ab3c35c