Thread (7 messages) read the whole thread 7 messages, 3 authors, 2025-11-08
STALE267d

Revision v3 of 3 in this series.

Revisions (3)
  1. v3 [diff vs current]
  2. v3 current
  3. v4 [diff vs current]

[PATCH v3 0/2] net: sched: initialize struct tc_ife to fix kernel-infoleak

From: Ranganath V N <hidden>
Date: 2025-11-06 19:56:52
Also in: lkml

This series addresses the uninitialization of the struct which has 
2 btes of padding. And copying this uninitialized data to userspace
can leak info from kernel memory.

This sereies ensure all members and padding are cleared prior to 
begin copied.

This change silences the KMSAN report and prevents potential information
leaks from the kernel memory.

Signed-off-by: Ranganath V N <redacted>
---
Changes in v3:
- updated the commit messages and subject.
- corrected the code misisng ";" in v2
- Link to v2: https://lore.kernel.org/r/20251101-infoleak-v2-0-01a501d41c09@gmail.com (local) 

Changes in v2:
- removed memset(&t, 0, sizeof(t)) from previous patch.
- added the new patch series to address the issue.
- Link to v1: https://lore.kernel.org/r/20251031-infoleak-v1-1-9f7250ee33aa@gmail.com (local)

Ranganath V N (2):
  net: sched: act_connmark: initialize struct tc_ife to fix kernel leak
  net: sched: act_ife: initialize struct tc_ife to fix KMSAN
    kernel-infoleak

 net/sched/act_connmark.c | 12 +++++++-----
 net/sched/act_ife.c      | 12 +++++++-----
 2 files changed, 14 insertions(+), 10 deletions(-)

-- 
2.43.0
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