UBUNTU-CVE-2024-35819
In the Linux kernel, the following vulnerability has been resolved: soc: fsl: qbman: Use raw spinlock for cgr_lock smp_call_function always runs its callback in hard IRQ context, even on PREEMPT_RT, where spinlocks can sleep. So we need to use a raw spinlock for cgr_lock to ensure we aren't waiting on a sleeping task. Although this bug has existed for a while, it was not apparent until commit ef2a8d5478b9 ("net: dpaa: Adjust queue depth on rate change") which invokes smp_call_function_single via qman_update_cgr_safe every time a link goes up or down.
02 / AFFECTED SOFTWARE
Affected packages
14 explicit affected versions
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7 explicit affected versions
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80 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
37 explicit affected versions
37 explicit affected versions
6 explicit affected versions
14 explicit affected versions
38 explicit affected versions
167 explicit affected versions
40 explicit affected versions
9 explicit affected versions
40 explicit affected versions
11 explicit affected versions
48 explicit affected versions
7 explicit affected versions
21 explicit affected versions
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4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
46 explicit affected versions
13 explicit affected versions
43 explicit affected versions
46 explicit affected versions
10 explicit affected versions
8 explicit affected versions
1 explicit affected versions
14 explicit affected versions
81 explicit affected versions
4 explicit affected versions
70 explicit affected versions
11 explicit affected versions
1 explicit affected versions
69 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: soc: fsl: qbman: Use raw spinlock for cgr_lock smp_call_function always runs its callback in hard IRQ context, even on PREEMPT_RT, where spinlocks can sleep. So we need to use a raw spinlock for cgr_lock to ensure we aren't waiting on a sleeping task. Although this bug has existed for a while, it was not apparent until commit ef2a8d5478b9 ("net: dpaa: Adjust queue depth on rate change") which invokes smp_call_function_single via qman_update_cgr_safe every time a link goes up or down.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/fbec4e7fed89b579f2483041fabf9650fb0dd6bc
- https://git.kernel.org/stable/c/2b3fede8225133671ce837c0d284804aa3bc7a02
- https://git.kernel.org/stable/c/32edca2f03a6cc42c650ddc3ad83d086e3f365d1
- https://git.kernel.org/stable/c/54d26adf64c04f186098b39dba86b86037084baa
- https://git.kernel.org/stable/c/9a3ca8292ce9fdcce122706c28c3f07bc857fe5e
- https://git.kernel.org/stable/c/cd53a8ae5aacb4ecd25088486dea1cd02e74b506
- https://git.kernel.org/stable/c/d6b5aac451c9cc12e43ab7308e0e2ddc52c62c14
- https://git.kernel.org/stable/c/f39d36b7540cf0088ed7ce2de2794f2aa237f6df
- https://git.kernel.org/stable/c/fbec4e7fed89b579f2483041fabf9650fb0dd6bc
- https://git.kernel.org/stable/c/ff50716b7d5b7985979a5b21163cd79fb3d21d59
- https://ubuntu.com/security/CVE-2024-35819
- https://ubuntu.com/security/notices/USN-6816-1
- https://ubuntu.com/security/notices/USN-6817-1
- https://ubuntu.com/security/notices/USN-6817-2
- https://ubuntu.com/security/notices/USN-6817-3
- https://ubuntu.com/security/notices/USN-6878-1
- 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-6919-1
- https://ubuntu.com/security/notices/USN-6927-1
- https://ubuntu.com/security/notices/USN-7019-1
- https://www.cve.org/CVERecord?id=CVE-2024-35819