CVE-2023-52907

Medium

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Wait for out_urb's completion in pn533_usb_send_frame() Fix a use-after-free that occurs in hcd when in_urb sent from pn533_usb_send_frame() is completed earlier than out_urb. Its callback frees the skb data in pn533_send_async_complete() that is used as a transfer buffer of out_urb. Wait before sending in_urb until the callback of out_urb is called. To modify the callback of out_urb alone, separate the complete function of out_urb and ack_urb. Found by a modified version of syzkaller. BUG: KASAN: use-after-free in dummy_timer Call Trace: memcpy (mm/kasan/shadow.c:65) dummy_perform_transfer (drivers/usb/gadget/udc/dummy_hcd.c:1352) transfer (drivers/usb/gadget/udc/dummy_hcd.c:1453) dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:1972) arch_static_branch (arch/x86/include/asm/jump_label.h:27) static_key_false (include/linux/jump_label.h:207) timer_expire_exit (include/trace/events/timer.h:127) call_timer_fn (kernel/time/timer.c:1475) expire_timers (kernel/time/timer.c:1519) __run_timers (kernel/time/timer.c:1790) run_timer_softirq (kernel/time/timer.c:1803)

Package Linux Kernel
Published 2024-08-21
Last modified 2024-09-12
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-416

CVE-2023-52907 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 3.1 and later are affected. Fixed in 4.14.303, 4.19.270, 5.4.229, 5.10.164, 5.15.89, 6.1.7, 6.2 and their respective stable series.

Affected from
≥ 3.1
Fixed in
✓ 4.14.303 4.14.x ✓ 4.19.270 4.19.x ✓ 5.4.229 5.4.x ✓ 5.10.164 5.10.x ✓ 5.15.89 5.15.x ✓ 6.1.7 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2023-52907 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

7 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2023-52907?

    CVE-2023-52907 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 3.1 onward and has been patched in 4.14.303, 4.19.270, 5.4.229 and others. CVE-2023-52907 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-52907?

    CVE-2023-52907 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2023-52907?

    Yes — CVE-2023-52907 has been patched. Fixed versions include 4.14.303, 4.19.270, 5.4.229 and others. If you are running Linux kernel 3.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-52907 actively exploited?

    No — CVE-2023-52907 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Use After Free (CWE-416)?

    The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →

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