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CVE-2023-52615— hwrng: core - Fix page fault dead lock on mmap-ed hwrng

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，该漏洞源于mmap-ed hwrng存在死锁问题。

AI Predicted 4.4 Difficulty: Easy EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 9996508b3353063f2d6c48c1a28a84543d72d70b< eafd83b92f6c044007a3591cbd476bcf90455990 affected
9996508b3353063f2d6c48c1a28a84543d72d70b< 5030d4c798863ccb266563201b341a099e8cdd48 affected
9996508b3353063f2d6c48c1a28a84543d72d70b< c6a8111aacbfe7a8a70f46cc0de8eed00561693c affected
9996508b3353063f2d6c48c1a28a84543d72d70b< 26cc6d7006f922df6cc4389248032d955750b2a0 affected
9996508b3353063f2d6c48c1a28a84543d72d70b< aa8aa16ed9adf1df05bb339d588cf485a011839e affected
9996508b3353063f2d6c48c1a28a84543d72d70b< ecabe8cd456d3bf81e92c53b074732f3140f170d affected
9996508b3353063f2d6c48c1a28a84543d72d70b< 6822a14271786150e178869f1495cc03e74c5029 affected
9996508b3353063f2d6c48c1a28a84543d72d70b< 78aafb3884f6bc6636efcc1760c891c8500b9922 affected
… +10 more rows
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I. Basic Information for CVE-2023-52615

Vulnerability Information
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Vulnerability Title
hwrng: core - Fix page fault dead lock on mmap-ed hwrng
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: hwrng: core - Fix page fault dead lock on mmap-ed hwrng There is a dead-lock in the hwrng device read path. This triggers when the user reads from /dev/hwrng into memory also mmap-ed from /dev/hwrng. The resulting page fault triggers a recursive read which then dead-locks. Fix this by using a stack buffer when calling copy_to_user.
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，该漏洞源于mmap-ed hwrng存在死锁问题。
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 9996508b3353063f2d6c48c1a28a84543d72d70b ~ eafd83b92f6c044007a3591cbd476bcf90455990 -
Linux Linux 2.6.33 -

II. Public POCs for CVE-2023-52615

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III. Intelligence Information for CVE-2023-52615

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Mailing List Discussions for CVE-2023-52615 (2)

Other References for CVE-2023-52615 (8)

Same Patch Batch · Linux · 2024-03-18 · 21 CVEs total

CVE-2024-26641 8.6 HIGH ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()
CVE-2024-26640 7.8 HIGH tcp: add sanity checks to rx zerocopy
CVE-2023-52612 7.8 HIGH crypto: scomp - fix req->dst buffer overflow
CVE-2024-26637 7.8 HIGH wifi: ath11k: rely on mac80211 debugfs handling for vif
CVE-2024-26631 7.8 HIGH ipv6: mcast: fix data-race in ipv6_mc_down / mld_ifc_work
CVE-2024-26632 7.8 HIGH block: Fix iterating over an empty bio with bio_for_each_folio_all
CVE-2023-52616 7.8 HIGH crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init
CVE-2023-52614 7.8 HIGH PM / devfreq: Fix buffer overflow in trans_stat_show
CVE-2023-52610 7.5 HIGH net/sched: act_ct: fix skb leak and crash on ooo frags
CVE-2024-26633 ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim()
CVE-2024-26634 net: fix removing a namespace with conflicting altnames
CVE-2024-26635 llc: Drop support for ETH_P_TR_802_2.
CVE-2023-52613 drivers/thermal/loongson2_thermal: Fix incorrect PTR_ERR() judgment
CVE-2024-26636 llc: make llc_ui_sendmsg() more robust against bonding changes
CVE-2024-26638 nbd: always initialize struct msghdr completely
CVE-2023-52617 PCI: switchtec: Fix stdev_release() crash after surprise hot remove
CVE-2023-52618 block/rnbd-srv: Check for unlikely string overflow
CVE-2023-52619 pstore/ram: Fix crash when setting number of cpus to an odd number
CVE-2023-52611 wifi: rtw88: sdio: Honor the host max_req_size in the RX path
CVE-2023-52609 binder: fix race between mmput() and do_exit()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-52615

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