CVE-2023-52633— um: time-travel: fix time corruption
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I. Basic Information for CVE-2023-52633
Vulnerability Information
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Vulnerability Title
um: time-travel: fix time corruption
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: um: time-travel: fix time corruption In 'basic' time-travel mode (without =inf-cpu or =ext), we still get timer interrupts. These can happen at arbitrary points in time, i.e. while in timer_read(), which pushes time forward just a little bit. Then, if we happen to get the interrupt after calculating the new time to push to, but before actually finishing that, the interrupt will set the time to a value that's incompatible with the forward, and we'll crash because time goes backwards when we do the forwarding. Fix this by reading the time_travel_time, calculating the adjustment, and doing the adjustment all with interrupts disabled.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存在定时器中断。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-52633
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Same Patch Batch · Linux · 2024-04-02 · 35 CVEs total
| CVE-2024-26677 | rxrpc: Fix delayed ACKs to not set the reference serial number | |
| CVE-2023-52635 | PM / devfreq: Synchronize devfreq_monitor_[start/stop] | |
| CVE-2024-26671 | blk-mq: fix IO hang from sbitmap wakeup race | |
| CVE-2024-26672 | drm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get | |
| CVE-2024-26673 | netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations | |
| CVE-2023-52636 | libceph: just wait for more data to be available on the socket | |
| CVE-2024-26674 | x86/lib: Revert to _ASM_EXTABLE_UA() for {get,put}_user() fixups | |
| CVE-2024-26675 | ppp_async: limit MRU to 64K | |
| CVE-2024-26676 | af_unix: Call kfree_skb() for dead unix_(sk)->oob_skb in GC. | |
| CVE-2023-52634 | drm/amd/display: Fix disable_otg_wa logic | |
| CVE-2024-26678 | x86/efistub: Use 1:1 file:memory mapping for PE/COFF .compat section | |
| CVE-2024-26679 | inet: read sk->sk_family once in inet_recv_error() | |
| CVE-2024-26680 | net: atlantic: Fix DMA mapping for PTP hwts ring | |
| CVE-2024-26681 | netdevsim: avoid potential loop in nsim_dev_trap_report_work() | |
| CVE-2024-26682 | wifi: mac80211: improve CSA/ECSA connection refusal | |
| CVE-2024-26683 | wifi: cfg80211: detect stuck ECSA element in probe resp | |
| CVE-2024-26684 | net: stmmac: xgmac: fix handling of DPP safety error for DMA channels | |
| CVE-2024-26664 | hwmon: (coretemp) Fix out-of-bounds memory access | |
| CVE-2024-26657 | drm/sched: fix null-ptr-deref in init entity | |
| CVE-2023-52631 | fs/ntfs3: Fix an NULL dereference bug |
Showing top 20 of 35 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2023-52633
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