CVE-2024-44953: scsi: ufs: core: Fix deadlock during RTC update
First published: Wed Sep 04 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix deadlock during RTC update There is a deadlock when runtime suspend waits for the flush of RTC work, and the RTC work calls ufshcd_rpm_get_sync() to wait for runtime resume. Here is deadlock backtrace: kworker/0:1 D 4892.876354 10 10971 4859 0x4208060 0x8 10 0 120 670730152367 ptr f0ffff80c2e40000 0 1 0x00000001 0x000000ff 0x000000ff 0x000000ff <ffffffee5e71ddb0> __switch_to+0x1a8/0x2d4 <ffffffee5e71e604> __schedule+0x684/0xa98 <ffffffee5e71ea60> schedule+0x48/0xc8 <ffffffee5e725f78> schedule_timeout+0x48/0x170 <ffffffee5e71fb74> do_wait_for_common+0x108/0x1b0 <ffffffee5e71efe0> wait_for_completion+0x44/0x60 <ffffffee5d6de968> __flush_work+0x39c/0x424 <ffffffee5d6decc0> __cancel_work_sync+0xd8/0x208 <ffffffee5d6dee2c> cancel_delayed_work_sync+0x14/0x28 <ffffffee5e2551b8> __ufshcd_wl_suspend+0x19c/0x480 <ffffffee5e255fb8> ufshcd_wl_runtime_suspend+0x3c/0x1d4 <ffffffee5dffd80c> scsi_runtime_suspend+0x78/0xc8 <ffffffee5df93580> __rpm_callback+0x94/0x3e0 <ffffffee5df90b0c> rpm_suspend+0x2d4/0x65c <ffffffee5df91448> __pm_runtime_suspend+0x80/0x114 <ffffffee5dffd95c> scsi_runtime_idle+0x38/0x6c <ffffffee5df912f4> rpm_idle+0x264/0x338 <ffffffee5df90f14> __pm_runtime_idle+0x80/0x110 <ffffffee5e24ce44> ufshcd_rtc_work+0x128/0x1e4 <ffffffee5d6e3a40> process_one_work+0x26c/0x650 <ffffffee5d6e65c8> worker_thread+0x260/0x3d8 <ffffffee5d6edec8> kthread+0x110/0x134 <ffffffee5d616b18> ret_from_fork+0x10/0x20 Skip updating RTC if RPM state is not RPM_ACTIVE.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.8<6.10.5 | |
| Linux Kernel | =6.11-rc1 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-44953
- https://nvd.nist.gov/vuln/detail/CVE-2024-44953
- https://launchpad.net/bugs/cve/CVE-2024-44953
- https://security-tracker.debian.org/tracker/CVE-2024-44953
- https://ubuntu.com/security/CVE-2024-44953
- https://git.kernel.org/stable/c/3911af778f208e5f49d43ce739332b91e26bc48e
- https://git.kernel.org/stable/c/f13f1858a28c68b7fc0d72c2008d5c1f80d2e8d5
- https://git.kernel.org/linus/3911af778f208e5f49d43ce739332b91e26bc48e
- https://git.kernel.org/stable/c/a4921b76bc9421d3838e167f6a17ea3112d8fe62
Frequently Asked Questions
What is the severity of CVE-2024-44953?
CVE-2024-44953 is classified as a medium severity vulnerability due to a potential deadlock in the Linux kernel during runtime suspend operations.
How do I fix CVE-2024-44953?
To resolve CVE-2024-44953, update your Linux kernel to version 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.16-1.
Which systems are affected by CVE-2024-44953?
CVE-2024-44953 affects various versions of the Linux kernel, specifically those from versions 6.8 to 6.10.5 and certain release candidates.
Is CVE-2024-44953 related to runtime suspend issues?
Yes, CVE-2024-44953 is specifically related to a deadlock that occurs during the runtime suspend process in the Linux kernel.
What type of vulnerability is CVE-2024-44953?
CVE-2024-44953 is a deadlock vulnerability impacting the synchronization of runtime suspend and RTC work in the Linux kernel.
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