CVE-2023-52932
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm/swapfile: add cond_resched() in get_swap_pages()
The softlockup still occurs in get_swap_pages() under memory pressure. 64 CPU cores, 64GB memory, and 28 zram devices, the disksize of each zram device is 50MB with same priority as si. Use the stress-ng tool to increase memory pressure, causing the system to oom frequently.
The plist_for_each_entry_safe() loops in get_swap_pages() could reach tens of thousands of times to find available space (extreme case: cond_resched() is not called in scan_swap_map_slots()). Let's add cond_resched() into get_swap_pages() when failed to find available space to avoid softlockup.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | adfab836f4908deb049a5128082719e689eed964 < 29f0349c5c76b627fe06b87d4b13fa03a6ce8e64 | affected |
| Linux | Linux | adfab836f4908deb049a5128082719e689eed964 < 387217b97e99699c34e6d95ce2b91b327fcd853e | affected |
| Linux | Linux | adfab836f4908deb049a5128082719e689eed964 < d49c85a1913385eed46dd16a25ad0928253767f0 | affected |
| Linux | Linux | adfab836f4908deb049a5128082719e689eed964 < 30187be29052bba9203b0ae2bdd815e0bc2faaab | affected |
| Linux | Linux | adfab836f4908deb049a5128082719e689eed964 < 5dbe1ebd56470d03b78fc31491a9e4d433106ef2 | affected |
| Linux | Linux | adfab836f4908deb049a5128082719e689eed964 < 49178d4d61e78aed8c837dfeea8a450700f196e2 | affected |
| Linux | Linux | adfab836f4908deb049a5128082719e689eed964 < 7717fc1a12f88701573f9ed897cc4f6699c661e3 | affected |
| Linux | Linux | 75b1f2d3ed3169675b69b2f68217ebb839414657 | affected |
| Linux | Linux | bcbfe6fdf8576a545fafdfe4611f59cc6b166589 | affected |
| Linux | Linux | 3.12.30 < 3.13 | affected |
| Linux | Linux | 3.14.21 < 3.15 | affected |
| Linux | Linux | 3.16 | affected |
| Linux | Linux | 0 < 3.16 | unaffected |
| Linux | Linux | 4.14.306 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.273 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.232 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.168 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.93 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.11 <= 6.1.* | unaffected |
| Linux | Linux | 6.2 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://git.kernel.org/stable/c/29f0349c5c76b627fe06b87d4b13fa03a6ce8e64
- https://git.kernel.org/stable/c/387217b97e99699c34e6d95ce2b91b327fcd853e
- https://git.kernel.org/stable/c/d49c85a1913385eed46dd16a25ad0928253767f0
- https://git.kernel.org/stable/c/30187be29052bba9203b0ae2bdd815e0bc2faaab
- https://git.kernel.org/stable/c/5dbe1ebd56470d03b78fc31491a9e4d433106ef2
- https://git.kernel.org/stable/c/49178d4d61e78aed8c837dfeea8a450700f196e2
- https://git.kernel.org/stable/c/7717fc1a12f88701573f9ed897cc4f6699c661e3
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