CVE-2021-46963
What it is
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix crash in qla2xxx_mqueuecommand() RIP: 0010:kmem_cache_free+0xfa/0x1b0 Call Trace: qla2xxx_mqueuecommand+0x2b5/0x2c0 [qla2xxx] scsi_queue_rq+0x5e2/0xa40 __blk_mq_try_issue_directly+0x128/0x1d0 blk_mq_request_issue_directly+0x4e/0xb0 Fix incorrect call to free srb in qla2xxx_mqueuecommand(), as srb is now allocated by upper layers. This fixes smatch warning of srb unintended free.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Modified
Affected
- Linux Kernel < 4.19.191
- Linux Kernel < 5.4.118
- Linux Kernel < 5.10.36
- Linux Kernel < 5.11.20
- Linux Kernel < 5.12.3
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-46963.md and follow it. Check whether this project is affected by CVE-2021-46963. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/6641df81ab799f28a5d564f860233dd26cca0d93
- https://git.kernel.org/stable/c/702cdaa2c6283c135ef16d52e0e4e3c1005aa538
- https://git.kernel.org/stable/c/77509a238547863040a42d57c72403f7d4c89a8f
- https://git.kernel.org/stable/c/80ef24175df2cba3860d0369d1c662b49ee2de56
- https://git.kernel.org/stable/c/a73208e3244127ef9f2cdf24e4adb947aaa32053
- https://git.kernel.org/stable/c/c5ab9b67d8b061de74e2ca51bf787ee599bd7f89
- https://git.kernel.org/stable/c/6641df81ab799f28a5d564f860233dd26cca0d93
- https://git.kernel.org/stable/c/702cdaa2c6283c135ef16d52e0e4e3c1005aa538
- https://git.kernel.org/stable/c/77509a238547863040a42d57c72403f7d4c89a8f
- https://git.kernel.org/stable/c/80ef24175df2cba3860d0369d1c662b49ee2de56
References
- https://git.kernel.org/stable/c/6641df81ab799f28a5d564f860233dd26cca0d93
- https://git.kernel.org/stable/c/702cdaa2c6283c135ef16d52e0e4e3c1005aa538
- https://git.kernel.org/stable/c/77509a238547863040a42d57c72403f7d4c89a8f
- https://git.kernel.org/stable/c/80ef24175df2cba3860d0369d1c662b49ee2de56
- https://git.kernel.org/stable/c/a73208e3244127ef9f2cdf24e4adb947aaa32053
- https://git.kernel.org/stable/c/c5ab9b67d8b061de74e2ca51bf787ee599bd7f89
- https://git.kernel.org/stable/c/6641df81ab799f28a5d564f860233dd26cca0d93
- https://git.kernel.org/stable/c/702cdaa2c6283c135ef16d52e0e4e3c1005aa538
- https://git.kernel.org/stable/c/77509a238547863040a42d57c72403f7d4c89a8f
- https://git.kernel.org/stable/c/80ef24175df2cba3860d0369d1c662b49ee2de56
- https://git.kernel.org/stable/c/a73208e3244127ef9f2cdf24e4adb947aaa32053
- https://git.kernel.org/stable/c/c5ab9b67d8b061de74e2ca51bf787ee599bd7f89