UBUNTU-CVE-2024-36020
In the Linux kernel, the following vulnerability has been resolved: i40e: fix vf may be used uninitialized in this function warning To fix the regression introduced by commit 52424f974bc5, which causes servers hang in very hard to reproduce conditions with resets races. Using two sources for the information is the root cause. In this function before the fix bumping v didn't mean bumping vf pointer. But the code used this variables interchangeably, so stale vf could point to different/not intended vf. Remove redundant "v" variable and iterate via single VF pointer across whole function instead to guarantee VF pointer validity.
02 / AFFECTED SOFTWARE
Affected packages
78 explicit affected versions
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46 explicit affected versions
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46 explicit affected versions
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14 explicit affected versions
81 explicit affected versions
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11 explicit affected versions
1 explicit affected versions
48 explicit affected versions
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03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: i40e: fix vf may be used uninitialized in this function warning To fix the regression introduced by commit 52424f974bc5, which causes servers hang in very hard to reproduce conditions with resets races. Using two sources for the information is the root cause. In this function before the fix bumping v didn't mean bumping vf pointer. But the code used this variables interchangeably, so stale vf could point to different/not intended vf. Remove redundant "v" variable and iterate via single VF pointer across whole function instead to guarantee VF pointer validity.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/f37c4eac99c258111d414d31b740437e1925b8e8
- https://git.kernel.org/stable/c/06df7618f591b2dc43c59967e294d7b9fc8675b6
- https://git.kernel.org/stable/c/0dcf573f997732702917af1563aa2493dc772fc0
- https://git.kernel.org/stable/c/3e89846283f3cf7c7a8e28b342576fd7c561d2ba
- https://git.kernel.org/stable/c/951d2748a2a8242853abc3d0c153ce4bf8faad31
- https://git.kernel.org/stable/c/9dcf0fcb80f6aeb01469e3c957f8d4c97365450a
- https://git.kernel.org/stable/c/b8e82128b44fa40bf99a50b919488ef361e1683c
- https://git.kernel.org/stable/c/cc9cd02dd9e8b7764ea9effb24f4f1dd73d1b23d
- https://git.kernel.org/stable/c/f37c4eac99c258111d414d31b740437e1925b8e8
- https://ubuntu.com/security/CVE-2024-36020
- https://ubuntu.com/security/notices/USN-6893-1
- https://ubuntu.com/security/notices/USN-6893-2
- https://ubuntu.com/security/notices/USN-6893-3
- https://ubuntu.com/security/notices/USN-6896-1
- https://ubuntu.com/security/notices/USN-6896-2
- https://ubuntu.com/security/notices/USN-6896-3
- https://ubuntu.com/security/notices/USN-6896-4
- https://ubuntu.com/security/notices/USN-6896-5
- https://ubuntu.com/security/notices/USN-6898-1
- https://ubuntu.com/security/notices/USN-6898-2
- https://ubuntu.com/security/notices/USN-6898-3
- https://ubuntu.com/security/notices/USN-6898-4
- https://ubuntu.com/security/notices/USN-6917-1
- https://ubuntu.com/security/notices/USN-6918-1
- https://ubuntu.com/security/notices/USN-6919-1
- https://ubuntu.com/security/notices/USN-6927-1
- https://ubuntu.com/security/notices/USN-7019-1
- https://ubuntu.com/security/notices/USN-7121-1
- https://ubuntu.com/security/notices/USN-7121-2
- https://ubuntu.com/security/notices/USN-7121-3
- https://www.cve.org/CVERecord?id=CVE-2024-36020