CVE-2024-27060
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-27060
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27060.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-27060
- Downstream
- Published
- 2024-05-01T13:15:50Z
- Modified
- 2024-12-23T14:22:29Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
thunderbolt: Fix NULL pointer dereference in tbportupdate_credits()
Olliver reported that his system crashes when plugging in Thunderbolt 1 device:
BUG: kernel NULL pointer dereference, address: 0000000000000020 #PF: supervisor read access in kernel mode #PF: errorcode(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:tbportdoupdatecredits+0x1b/0x130 [thunderbolt] Call Trace: <TASK> ? _die+0x23/0x70 ? pagefaultoops+0x171/0x4e0 ? excpagefault+0x7f/0x180 ? asmexcpagefault+0x26/0x30 ? tbportdoupdatecredits+0x1b/0x130 ? tbswitchupdatelinkattributes+0x83/0xd0 tbswitchadd+0x7a2/0xfe0 tbscanport+0x236/0x6f0 tbhandlehotplug+0x6db/0x900 processonework+0x171/0x340 workerthread+0x27b/0x3a0 ? _pfxworkerthread+0x10/0x10 kthread+0xe5/0x120 ? _pfxkthread+0x10/0x10 retfromfork+0x31/0x50 ? _pfxkthread+0x10/0x10 retfromforkasm+0x1b/0x30 </TASK>
This is due the fact that some Thunderbolt 1 devices only have one lane adapter. Fix this by checking for the lane 1 before we read its credits.
- References
Affected packages
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source