CVE-2024-46715

driver: iio: add missing checks on iio_info's callback access

MEDIUM

5.5

CVSS Score

Published: September 18, 2024 at 06:32 AM UTC

Updated: June 17, 2026 at 07:55 AM UTC

1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: driver: iio: add missing checks on iio_info's callback access Some callbacks from iio_info structure are accessed without any check, so if a driver doesn't implement them trying to access the corresponding sysfs entries produce a kernel oops such as: [ 2203.527791] Unable to handle kernel NULL pointer dereference at virtual address 00000000 when execute [...] [ 2203.783416] Call trace: [ 2203.783429] iio_read_channel_info_avail from dev_attr_show+0x18/0x48 [ 2203.789807] dev_attr_show from sysfs_kf_seq_show+0x90/0x120 [ 2203.794181] sysfs_kf_seq_show from seq_read_iter+0xd0/0x4e4 [ 2203.798555] seq_read_iter from vfs_read+0x238/0x2a0 [ 2203.802236] vfs_read from ksys_read+0xa4/0xd4 [ 2203.805385] ksys_read from ret_fast_syscall+0x0/0x54 [ 2203.809135] Exception stack(0xe0badfa8 to 0xe0badff0) [ 2203.812880] dfa0: 00000003 b6f10f80 00000003 b6eab000 00020000 00000000 [ 2203.819746] dfc0: 00000003 b6f10f80 7ff00000 00000003 00000003 00000000 00020000 00000000 [ 2203.826619] dfe0: b6e1bc88 bed80958 b6e1bc94 b6e1bcb0 [ 2203.830363] Code: bad PC value [ 2203.832695] ---[ end trace 0000000000000000 ]---

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v < 6.1.1094.10 ≤ v < 5.15.2034.10 ≤ v < 6.1.1094.10 ≤ v < 6.10.94.10 ≤ v < 6.114.10 ≤ v < 6.6.506.2 ≤ v < 6.6.506.7 ≤ v < 6.10.94.1051239600074bc9979b0a0e83b72c726d7dcc3132

Vendor states this is fixed in 0cc7e0ee31e5c44904e98e2229d591e093282a70 (fixed)

Vendor states this is fixed in 2b961d5786b4b31c367c719a2f918569b444c007 (fixed)

Vendor states this is fixed in 72f022ebb9deac28663fa4c04ba315ed5d6654d1 (fixed)

Vendor states this is fixed in c4ec8dedca961db056ec85cb7ca8c9f7e2e92252 (fixed)

Vendor states this is fixed in dc537a72f64890d883d24ae4ac58733fc5bc523d (fixed)

Vendor states this is fixed in 4.10 (unaffected)

Vendor states this is fixed in 5.15.203 (unaffected)

Vendor states this is fixed in 6.1.109 (unaffected)

Vendor states this is fixed in 6.10.9 (unaffected)

Vendor states this is fixed in 6.11 (unaffected)

Vendor states this is fixed in 6.6.50 (unaffected)