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author | mav <mav@FreeBSD.org> | 2017-03-23 06:40:20 +0000 |
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committer | mav <mav@FreeBSD.org> | 2017-03-23 06:40:20 +0000 |
commit | ac0b8ac0de8c7dfa4c384cf95592608a8e51ad6b (patch) | |
tree | 6e9df05cb67fe928cbc688fa65d444bdb8a97f29 /sys/dev/ppbus | |
parent | f37700e920785f69d2c175aab95f60a8ecc9c517 (diff) | |
download | FreeBSD-src-ac0b8ac0de8c7dfa4c384cf95592608a8e51ad6b.zip FreeBSD-src-ac0b8ac0de8c7dfa4c384cf95592608a8e51ad6b.tar.gz |
MFC r311305 (by asomers):
Always null-terminate ccb_pathinq.(sim_vid|hba_vid|dev_name)
The sim_vid, hba_vid, and dev_name fields of struct ccb_pathinq are
fixed-length strings. AFAICT the only place they're read is in
sbin/camcontrol/camcontrol.c, which assumes they'll be null-terminated.
However, the kernel doesn't null-terminate them. A bunch of copy-pasted code
uses strncpy to write them, and doesn't guarantee null-termination. For at
least 4 drivers (mpr, mps, ciss, and hyperv), the hba_vid field actually
overflows. You can see the result by doing "camcontrol negotiate da0 -v".
This change null-terminates those fields everywhere they're set in the
kernel. It also shortens a few strings to ensure they'll fit within the
16-character field.
PR: 215474
Reported by: Coverity
CID: 1009997 1010000 1010001 1010002 1010003 1010004 1010005
CID: 1331519 1010006 1215097 1010007 1288967 1010008 1306000
CID: 1211924 1010009 1010010 1010011 1010012 1010013 1010014
CID: 1147190 1010017 1010016 1010018 1216435 1010020 1010021
CID: 1010022 1009666 1018185 1010023 1010025 1010026 1010027
CID: 1010028 1010029 1010030 1010031 1010033 1018186 1018187
CID: 1010035 1010036 1010042 1010041 1010040 1010039
Diffstat (limited to 'sys/dev/ppbus')
-rw-r--r-- | sys/dev/ppbus/vpo.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sys/dev/ppbus/vpo.c b/sys/dev/ppbus/vpo.c index d9e7cb8..c8585c8 100644 --- a/sys/dev/ppbus/vpo.c +++ b/sys/dev/ppbus/vpo.c @@ -390,9 +390,9 @@ vpo_action(struct cam_sim *sim, union ccb *ccb) cpi->initiator_id = VP0_INITIATOR; cpi->bus_id = sim->bus_id; cpi->base_transfer_speed = 93; - strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); - strncpy(cpi->hba_vid, "Iomega", HBA_IDLEN); - strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN); + strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); + strlcpy(cpi->hba_vid, "Iomega", HBA_IDLEN); + strlcpy(cpi->dev_name, sim->sim_name, DEV_IDLEN); cpi->unit_number = sim->unit_number; cpi->transport = XPORT_PPB; cpi->transport_version = 0; |