CVE-2022-49090
published 2025-02-26CVE-2022-49090: In the Linux kernel, the following vulnerability has been resolved: arch/arm64: Fix topology initialization for core scheduling Arm64 systems rely on…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
15.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
arch/arm64: Fix topology initialization for core scheduling
Arm64 systems rely on store_cpu_topology() to call update_siblings_masks()
to transfer the toplogy to the various cpu masks. This needs to be done
before the call to notify_cpu_starting() which tells the scheduler about
each cpu found, otherwise the core scheduling data structures are setup
in a way that does not match the actual topology.
With smt_mask not setup correctly we bail on `cpumask_weight(smt_mask) == 1`
for !leaders in:
notify_cpu_starting()
cpuhp_invoke_callback_range()
sched_cpu_starting()
sched_core_cpu_starting()
which leads to rq->core not being correctly set for !leader-rq's.
Without this change stress-ng (which enables core scheduling in its prctl
tests in newer versions -- i.e. with PR_SCHED_CORE support) causes a warning
and then a crash (trimmed for legibility):
[ 1853.805168] ------------[ cut here ]------------
[ 1853.809784] task_rq(b)->core != rq->core
[ 1853.809792] WARNING: CPU: 117 PID: 0 at kernel/sched/fair.c:11102 cfs_prio_less+0x1b4/0x1c4
...
[ 1854.015210] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
...
[ 1854.231256] Call trace:
[ 1854.233689] pick_next_task+0x3dc/0x81c
[ 1854.237512] __schedule+0x10c/0x4cc
[ 1854.240988] schedule_idle+0x34/0x54
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.17.3-1 (bookworm) | linux 5.17.3-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 9edeaea1bc452372718837ed2ba775811baf1ba1 < 87f5d66daa5f457449bb95d6b8d18bb7596aa627 | 87f5d66daa5f457449bb95d6b8d18bb7596aa627 |
| linux | linux | >= 9edeaea1bc452372718837ed2ba775811baf1ba1 < 790c1567582bda8f1153015436e3330a7c6eb278 | 790c1567582bda8f1153015436e3330a7c6eb278 |
| linux | linux | >= 9edeaea1bc452372718837ed2ba775811baf1ba1 < c78a1b2d0bff678570c8dc9f14035606f5e5257d | c78a1b2d0bff678570c8dc9f14035606f5e5257d |
| linux | linux | >= 9edeaea1bc452372718837ed2ba775811baf1ba1 < 5524cbb1bfcdff0cad0aaa9f94e6092002a07259 | 5524cbb1bfcdff0cad0aaa9f94e6092002a07259 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 5.14 < 5.15.34 | 5.15.34 |
| linux | linux_kernel | >= 5.16 < 5.16.20 | 5.16.20 |
| linux | linux_kernel | >= 5.17 < 5.17.3 | 5.17.3 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
kernel: arch/arm64: Fix topology initialization for core scheduling
vendor_redhat·2025-02-26·CVSS 5.5
CVE-2022-49090 [MEDIUM] kernel: arch/arm64: Fix topology initialization for core scheduling
kernel: arch/arm64: Fix topology initialization for core scheduling
In the Linux kernel, the following vulnerability has been resolved:
arch/arm64: Fix topology initialization for core scheduling
Arm64 systems rely on store_cpu_topology() to call update_siblings_masks()
to transfer the toplogy to the various cpu masks. This needs to be done
before the call to notify_cpu_starting() which tells the scheduler about
each cpu found, otherwise the core scheduling data structures are setup
in a way that does not match the actual topology.
With smt_mask not setup correctly we bail on `cpumask_weight(smt_mask) == 1`
for !leaders in:
notify_cpu_starting()
cpuhp_invoke_callback_range()
sched_cpu_starting()
sched_core_cpu_starting()
which leads to rq->core not being correctly set for !leader-rq's.
Wi
Debian
CVE-2022-49090: linux - In the Linux kernel, the following vulnerability has been resolved: arch/arm64:...
vendor_debian·2022·CVSS 5.5
CVE-2022-49090 [MEDIUM] CVE-2022-49090: linux - In the Linux kernel, the following vulnerability has been resolved: arch/arm64:...
In the Linux kernel, the following vulnerability has been resolved: arch/arm64: Fix topology initialization for core scheduling Arm64 systems rely on store_cpu_topology() to call update_siblings_masks() to transfer the toplogy to the various cpu masks. This needs to be done before the call to notify_cpu_starting() which tells the scheduler about each cpu found, otherwise the core scheduling data structures are setup in a way that does not match the actual topology. With smt_mask not setup correctly we bail on `cpumask_weight(smt_mask) == 1` for !leaders in: notify_cpu_starting() cpuhp_invoke_callback_range() sched_cpu_starting() sched_core_cpu_starting() which leads to rq->core not being correctly set for !leader-rq's. Without this change stress-ng (which enables core scheduling in its prc
GHSA
GHSA-vpjp-wpjg-xv5m: In the Linux kernel, the following vulnerability has been resolved:
arch/arm64: Fix topology initialization for core scheduling
Arm64 systems rely o
ghsa_unreviewed·2025-09-23
CVE-2022-49090 [MEDIUM] CWE-476 GHSA-vpjp-wpjg-xv5m: In the Linux kernel, the following vulnerability has been resolved:
arch/arm64: Fix topology initialization for core scheduling
Arm64 systems rely o
In the Linux kernel, the following vulnerability has been resolved:
arch/arm64: Fix topology initialization for core scheduling
Arm64 systems rely on store_cpu_topology() to call update_siblings_masks()
to transfer the toplogy to the various cpu masks. This needs to be done
before the call to notify_cpu_starting() which tells the scheduler about
each cpu found, otherwise the core scheduling data structures are setup
in a way that does not match the actual topology.
With smt_mask not setup correctly we bail on `cpumask_weight(smt_mask) == 1`
for !leaders in:
notify_cpu_starting()
cpuhp_invoke_callback_range()
sched_cpu_starting()
sched_core_cpu_starting()
which leads to rq->core not being correctly set for !leader-rq's.
Without this change stress-ng (which enables core scheduling in i
OSV
CVE-2022-49090: In the Linux kernel, the following vulnerability has been resolved: arch/arm64: Fix topology initialization for core scheduling Arm64 systems rely on
osv·2025-02-26·CVSS 5.5
CVE-2022-49090 [MEDIUM] CVE-2022-49090: In the Linux kernel, the following vulnerability has been resolved: arch/arm64: Fix topology initialization for core scheduling Arm64 systems rely on
In the Linux kernel, the following vulnerability has been resolved: arch/arm64: Fix topology initialization for core scheduling Arm64 systems rely on store_cpu_topology() to call update_siblings_masks() to transfer the toplogy to the various cpu masks. This needs to be done before the call to notify_cpu_starting() which tells the scheduler about each cpu found, otherwise the core scheduling data structures are setup in a way that does not match the actual topology. With smt_mask not setup correctly we bail on `cpumask_weight(smt_mask) == 1` for !leaders in: notify_cpu_starting() cpuhp_invoke_callback_range() sched_cpu_starting() sched_core_cpu_starting() which leads to rq->core not being correctly set for !leader-rq's. Without this change stress-ng (which enables core scheduling in its prc
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-02-26
Published