CVE-2024-35992: phy: marvell: a3700-comphy: Fix out of bounds read
In the Linux kernel, the following vulnerability has been resolved:
phy: marvell: a3700-comphy: Fix out of bounds read
There is an out of bounds read access of 'gbe_phy_init_fix[fix_idx].addr'
every iteration after 'fix_idx' reaches 'ARRAY_SIZE(gbe_phy_init_fix)'.
Make sure 'gbe_phy_init[addr]' is used when all elements of
'gbe_phy_init_fix' array are handled.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Security readout for executives and security teams
Plain-English summary
CVE-2024-35992 is a Linux kernel bug in the Marvell a3700-comphy PHY driver. The driver could read past the end of an internal table during initialization logic. The public record does not provide CVSS, impact detail, or evidence of exploitation, so urgency depends on whether affected kernels and this hardware driver are in use.
Executive priority
Monitor and patch through normal kernel maintenance unless exposed device inventory shows active use of this Marvell driver. No source provided here supports emergency response or active exploitation claims.
Technical view
The resolved defect is an out-of-bounds read of gbe_phy_init_fix[fix_idx].addr after fix_idx reaches ARRAY_SIZE(gbe_phy_init_fix). The fix changes the logic to use gbe_phy_init[addr] after all gbe_phy_init_fix entries are handled. It was found by Linux Verification Center using SVACE.
Likely exposure
Exposure appears limited to Linux systems that include and use the Marvell a3700-comphy PHY driver. Kernel version data in the bundle marks Linux as affected but is not detailed enough here to define exact vulnerable ranges confidently.
Exploitation context
The source bundle does not cite active exploitation, weaponization, KEV listing, public exploit code, or attacker prerequisites. Treat this as a kernel maintenance vulnerability unless vendor or distribution advisories indicate a stronger operational impact.
Researcher notes
The evidence supports a bounds-read defect and upstream stable fixes, but not exploitability, attacker model, or business impact. Focus validation on driver presence, kernel provenance, and whether downstream vendors backported the listed commits.
Mitigation direction
Check your Linux distribution advisory for CVE-2024-35992.
Update to a kernel containing the referenced stable fixes.
Prioritize systems using Marvell a3700-comphy hardware support.
Track vendor kernel backports, not only upstream version numbers.
Validation and detection
Inventory kernels on devices that use Marvell a3700-comphy support.
Confirm whether the referenced stable commits are present.
Review distribution security notices for fixed package versions.
Verify no unsupported custom kernel carries the vulnerable driver code.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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CVE-2024-35992 mapping review
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