CVE-2024-50219
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- CVE-2024-50219
CVE Details
| Release Date: | 2024-11-09 |
Description
In the Linux kernel, the following vulnerability has been resolved:\nmm/page_alloc: let GFP_ATOMIC order-0 allocs access highatomic reserves\nUnder memory pressure it's possible for GFP_ATOMIC order-0 allocations to\nfail even though free pages are available in the highatomic reserves. \nGFP_ATOMIC allocations cannot trigger unreserve_highatomic_pageblock()\nsince it's only run from reclaim.\nGiven that such allocations will pass the watermarks in\n__zone_watermark_unusable_free(), it makes sense to fallback to highatomic\nreserves the same way that ALLOC_OOM can.\nThis fixes order-0 page allocation failures observed on Cloudflare's fleet\nwhen handling network packets:\nkswapd1: page allocation failure: order:0, mode:0x820(GFP_ATOMIC),\nnodemask=(null),cpuset=/,mems_allowed=0-7\nCPU: 10 PID: 696 Comm: kswapd1 Kdump: loaded Tainted: G O 6.6.43-CUSTOM #1\nHardware name: MACHINE\nCall Trace:\n
See more information about CVE-2024-50219 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 5.5 |
| Vector String: | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Version: | 3.1 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality: | None |
| Integrity: | None |
| Availability: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 8 (kernel-uek) | ELSA-2024-12887 | 2024-12-18 |
| Oracle Linux version 9 (kernel-uek) | ELSA-2024-12887 | 2024-12-18 |
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