CVE-2023-52898: xhci: Fix null pointer dereference when host dies
Vulnerability summary
CVE-2023-52898 is a medium (CVSS 4.7) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.1% of scored vulnerabilities.
Not severe (CVSS 4.7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 7Timeline
- 21-08-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: xhci: Fix null pointer dereference when host dies Make sure xhci_free_dev() and xhci_kill_endpoint_urbs() do not race and cause null pointer dereference when host suddenly dies. Usb core may call xhci_free_dev() which frees the xhci->devs[slot_id] virt device at the same time that xhci_kill_endpoint_urbs() tries to loop through all the device's endpoints, checking if there are any cancelled urbs left to give back. hold the xhci spinlock while freeing the virt device
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu113 products
- linuxAll versions (No fix recorded) | < 5.4.0-147.164 | < 5.15.0-70.77
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.4.0-1100.108 | < 5.15.0-1034.38
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 11ec7588a10d4bc2e1e385ac565d2166d375fba1, < 6fac4b5cecb3928a0a81069aaa815a2edc8dd5a1 | ≥ 11ec7588a10d4bc2e1e385ac565d2166d375fba1, < 133b902378e4acbd824c29dd0d48570ad596e368 | ≥ 11ec7588a10d4bc2e1e385ac565d2166d375fba1, < 081105213ff6f661c114781d469233c7d0e09c2e | ≥ 11ec7588a10d4bc2e1e385ac565d2166d375fba1, < c462ac871f49753eca86bb960f573b993976a5ea | ≥ 11ec7588a10d4bc2e1e385ac565d2166d375fba1, < ea2ee5e9991caf74e0604f994c1831a5867055b2 | ≥ 11ec7588a10d4bc2e1e385ac565d2166d375fba1, < a2bc47c43e70cf904b1af49f76d572326c08bca7 | 4.15
- linux_kernel< 4.19.271 | ≥ 4.20, < 5.4.230 | ≥ 5.5, < 5.10.165 | ≥ 5.11, < 5.15.90 | ≥ 5.16, < 6.1.8 | 6.2:rc1 | 6.2:rc2 | 6.2:rc3 | 6.2:rc4
Debian1 product
- linux< 6.1.8-1
3 vendors · 116 products
