Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2023-52597— KVM: s390: fix setting of fpc register

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。攻击者利用该漏洞导致主机进程的fpc寄存器损坏。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.23% · P13

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 4725c86055f5bbdcdfe47199c0715881893a2c79< 3a04410b0bc7e056e0843ac598825dd359246d18 affected
4725c86055f5bbdcdfe47199c0715881893a2c79< 5e63c9ae8055109d805aacdaf2a4fe2c3b371ba1 affected
4725c86055f5bbdcdfe47199c0715881893a2c79< 150a3a3871490e8c454ffbac2e60abeafcecff99 affected
4725c86055f5bbdcdfe47199c0715881893a2c79< 732a3bea7aba5b15026ea42d14953c3425cc7dc2 affected
4725c86055f5bbdcdfe47199c0715881893a2c79< 0671f42a9c1084db10d68ac347d08dbf6689ecb3 affected
4725c86055f5bbdcdfe47199c0715881893a2c79< c87d7d910775a025e230fd6359b60627e392460f affected
4725c86055f5bbdcdfe47199c0715881893a2c79< 2823db0010c400e4b2b12d02aa5d0d3ecb15d7c7 affected
4725c86055f5bbdcdfe47199c0715881893a2c79< b988b1bb0053c0dcd26187d29ef07566a565cf55 affected
… +10 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2023-52597

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
KVM: s390: fix setting of fpc register
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: fix setting of fpc register kvm_arch_vcpu_ioctl_set_fpu() allows to set the floating point control (fpc) register of a guest cpu. The new value is tested for validity by temporarily loading it into the fpc register. This may lead to corruption of the fpc register of the host process: if an interrupt happens while the value is temporarily loaded into the fpc register, and within interrupt context floating point or vector registers are used, the current fp/vx registers are saved with save_fpu_regs() assuming they belong to user space and will be loaded into fp/vx registers when returning to user space. test_fp_ctl() restores the original user space / host process fpc register value, however it will be discarded, when returning to user space. In result the host process will incorrectly continue to run with the value that was supposed to be used for a guest cpu. Fix this by simply removing the test. There is another test right before the SIE context is entered which will handles invalid values. This results in a change of behaviour: invalid values will now be accepted instead of that the ioctl fails with -EINVAL. This seems to be acceptable, given that this interface is most likely not used anymore, and this is in addition the same behaviour implemented with the memory mapped interface (replace invalid values with zero) - see sync_regs() in kvm-s390.c.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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。攻击者利用该漏洞导致主机进程的fpc寄存器损坏。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 4725c86055f5bbdcdfe47199c0715881893a2c79 ~ 3a04410b0bc7e056e0843ac598825dd359246d18 -
Linux Linux 3.13 -

II. Public POCs for CVE-2023-52597

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2023-52597

请登录查看更多情报信息。

Mailing List Discussions for CVE-2023-52597 (1)

Other References for CVE-2023-52597 (7)

Same Patch Batch · Linux · 2024-03-06 · 27 CVEs total

CVE-2023-52591 7.8 HIGH reiserfs: Avoid touching renamed directory if parent does not change
CVE-2023-52601 7.8 HIGH jfs: fix array-index-out-of-bounds in dbAdjTree
CVE-2023-52600 7.8 HIGH jfs: fix uaf in jfs_evict_inode
CVE-2023-52599 7.8 HIGH jfs: fix array-index-out-of-bounds in diNewExt
CVE-2023-52602 7.8 HIGH jfs: fix slab-out-of-bounds Read in dtSearch
CVE-2023-52603 7.8 HIGH UBSAN: array-index-out-of-bounds in dtSplitRoot
CVE-2023-52604 7.8 HIGH FS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree
CVE-2023-52606 7.8 HIGH powerpc/lib: Validate size for vector operations
CVE-2023-52590 7.8 HIGH ocfs2: Avoid touching renamed directory if parent does not change
CVE-2024-26623 7.8 HIGH pds_core: Prevent race issues involving the adminq
CVE-2024-26625 7.8 HIGH llc: call sock_orphan() at release time
CVE-2023-52586 7.8 HIGH drm/msm/dpu: Add mutex lock in control vblank irq
CVE-2024-26626 7.5 HIGH ipmr: fix kernel panic when forwarding mcast packets
CVE-2023-52588 7.3 HIGH f2fs: fix to tag gcing flag on page during block migration
CVE-2023-52598 s390/ptrace: handle setting of fpc register correctly
CVE-2023-52607 powerpc/mm: Fix null-pointer dereference in pgtable_cache_add
CVE-2024-26627 scsi: core: Move scsi_host_busy() out of host lock for waking up EH handler
CVE-2023-52583 ceph: fix deadlock or deadcode of misusing dget()
CVE-2023-52596 sysctl: Fix out of bounds access for empty sysctl registers
CVE-2023-52595 wifi: rt2x00: restart beacon queue when hardware reset

Showing top 20 of 27 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-52597

No comments yet

Leave a comment