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[PW_SID:1095975] [v3] Bluetooth: btintel: Use skb_pull_data return for bounds check#204

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[PW_SID:1095975] [v3] Bluetooth: btintel: Use skb_pull_data return for bounds check#204
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The length check at the top of btintel_print_fseq_info() verifies
the skb has at least 66 bytes (sizeof(u32) * 16 + 2), but the
function actually consumes 74 bytes (2 * 1 + 18 * 4). When firmware
returns a packet of exactly 66 bytes, the last two skb_pull_data()
calls return NULL, which is passed directly to get_unaligned_le32(),
resulting in a NULL pointer dereference.

Remove the insufficient length check and instead validate every
skb_pull_data() return value, branching to a malformed label that
logs the error and frees the skb.

Fixes: a7ba218 ("Bluetooth: btintel: Print Firmware Sequencer information")
Signed-off-by: Quan Sun 2022090917019@std.uestc.edu.cn

drivers/bluetooth/btintel.c | 106 +++++++++++++++++++++++++++---------
1 file changed, 79 insertions(+), 27 deletions(-)

tedd-an and others added 6 commits May 13, 2026 17:39
This patch adds workflow files for ci:

[sync.yml]
 - The workflow file for scheduled work
 - Sync the repo with upstream repo and rebase the workflow branch
 - Review the patches in the patchwork and creates the PR if needed

[ci.yml]
 - The workflow file for CI tasks
 - Run CI tests when PR is created

Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
This replaces the bzcafe action with bluez/action-ci so we can maintain
everything in the github bluez organization

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This attempts to sync every 5 minutes instead of 30.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
bluez/action-ci uses master as default branch for workflow which is
incorrect for kernel

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The CI action now creates individual GitHub Check Runs per test, which
requires 'checks: write' permission on the GITHUB_TOKEN. Also make the
pull_request trigger types explicit to include 'reopened', allowing CI
to be retriggered by closing and reopening a PR.
The length check at the top of btintel_print_fseq_info() verifies
the skb has at least 66 bytes (sizeof(u32) * 16 + 2), but the
function actually consumes 74 bytes (2 * 1 + 18 * 4). When firmware
returns a packet of exactly 66 bytes, the last two skb_pull_data()
calls return NULL, which is passed directly to get_unaligned_le32(),
resulting in a NULL pointer dereference.

Remove the insufficient length check and instead validate every
skb_pull_data() return value, branching to a malformed label that
logs the error and frees the skb.

Fixes: a7ba218 ("Bluetooth: btintel: Print Firmware Sequencer information")
Signed-off-by: Quan Sun <2022090917019@std.uestc.edu.cn>
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CheckPatch
Desc: Run checkpatch.pl script
Duration: 0.78 seconds
Result: PASS

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GitLint
Desc: Run gitlint
Duration: 0.32 seconds
Result: PASS

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SubjectPrefix
Desc: Check subject contains "Bluetooth" prefix
Duration: 0.13 seconds
Result: PASS

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BuildKernel
Desc: Build Kernel for Bluetooth
Duration: 25.20 seconds
Result: PASS

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CheckAllWarning
Desc: Run linux kernel with all warning enabled
Duration: 27.50 seconds
Result: PASS

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CheckSparse
Desc: Run sparse tool with linux kernel
Duration: 28.68 seconds
Result: PASS

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BuildKernel32
Desc: Build 32bit Kernel for Bluetooth
Duration: 24.76 seconds
Result: PASS

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TestRunnerSetup
Desc: Setup kernel and bluez for test-runner
Duration: 525.64 seconds
Result: PASS

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IncrementalBuild
Desc: Incremental build with the patches in the series
Duration: 23.95 seconds
Result: PASS

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4 participants