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CVE-2023-52505— phy: lynx-28g: serialize concurrent phy_set_mode_ext() calls to shared registers

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，该漏洞源于允许同时调用 phy_set_mode_ext() 来共享同一 PCC 寄存器。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 8f73b37cf3fbda67ea1e579c3b5785da4e7aa2e3< 6f901f8448c6b25ed843796b114471d2a3fc5dfb affected
8f73b37cf3fbda67ea1e579c3b5785da4e7aa2e3< c2d7c79898b427d263c64a4841987eec131f2d4e affected
8f73b37cf3fbda67ea1e579c3b5785da4e7aa2e3< 139ad1143151a07be93bf741d4ea7c89e59f89ce affected
5.18 affected
< 5.18 unaffected
6.1.59≤ 6.1.* unaffected
6.5.8≤ 6.5.* unaffected
6.6≤ * unaffected
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I. Basic Information for CVE-2023-52505

Vulnerability Information
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Vulnerability Title
phy: lynx-28g: serialize concurrent phy_set_mode_ext() calls to shared registers
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: phy: lynx-28g: serialize concurrent phy_set_mode_ext() calls to shared registers The protocol converter configuration registers PCC8, PCCC, PCCD (implemented by the driver), as well as others, control protocol converters from multiple lanes (each represented as a different struct phy). So, if there are simultaneous calls to phy_set_mode_ext() to lanes sharing the same PCC register (either for the "old" or for the "new" protocol), corruption of the values programmed to hardware is possible, because lynx_28g_rmw() has no locking. Add a spinlock in the struct lynx_28g_priv shared by all lanes, and take the global spinlock from the phy_ops :: set_mode() implementation. There are no other callers which modify PCC registers.
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，该漏洞源于允许同时调用 phy_set_mode_ext() 来共享同一 PCC 寄存器。
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 8f73b37cf3fbda67ea1e579c3b5785da4e7aa2e3 ~ 6f901f8448c6b25ed843796b114471d2a3fc5dfb -
Linux Linux 5.18 -

II. Public POCs for CVE-2023-52505

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III. Intelligence Information for CVE-2023-52505

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Other References for CVE-2023-52505 (3)

Same Patch Batch · Linux · 2024-03-02 · 57 CVEs total

CVE-2023-52515 9.8 CRITICAL RDMA/srp: Do not call scsi_done() from srp_abort()
CVE-2023-52530 8.8 HIGH wifi: mac80211: fix potential key use-after-free
CVE-2023-52522 8.8 HIGH net: fix possible store tearing in neigh_periodic_work()
CVE-2023-52502 8.8 HIGH net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()
CVE-2024-26621 8.2 HIGH mm: huge_memory: don't force huge page alignment on 32 bit
CVE-2023-52574 7.8 HIGH team: fix null-ptr-deref when team device type is changed
CVE-2023-52509 7.8 HIGH ravb: Fix use-after-free issue in ravb_tx_timeout_work()
CVE-2023-52572 7.8 HIGH cifs: Fix UAF in cifs_demultiplex_thread()
CVE-2023-52503 7.8 HIGH tee: amdtee: fix use-after-free vulnerability in amdtee_close_session
CVE-2023-52517 7.8 HIGH spi: sun6i: fix race between DMA RX transfer completion and RX FIFO drain
CVE-2023-52523 7.8 HIGH bpf, sockmap: Reject sk_msg egress redirects to non-TCP sockets
CVE-2023-52513 7.5 HIGH RDMA/siw: Fix connection failure handling
CVE-2023-52565 7.1 HIGH media: uvcvideo: Fix OOB read
CVE-2023-52562 mm/slab_common: fix slab_caches list corruption after kmem_cache_destroy()
CVE-2023-52581 netfilter: nf_tables: fix memleak when more than 255 elements expired
CVE-2023-52566 nilfs2: fix potential use after free in nilfs_gccache_submit_read_data()
CVE-2023-52564 Revert "tty: n_gsm: fix UAF in gsm_cleanup_mux"
CVE-2023-52563 drm/meson: fix memory leak on ->hpd_notify callback
CVE-2022-48627 vt: fix memory overlapping when deleting chars in the buffer
CVE-2023-52559 iommu/vt-d: Avoid memory allocation in iommu_suspend()

Showing top 20 of 57 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-52505

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