Security Vulnerabilities - CVEs Published In June 2024
In the Linux kernel, the following vulnerability has been resolved:
powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06
Johan reported the below crash with test_bpf on ppc64 e5500:
test_bpf: #296 ALU_END_FROM_LE 64: 0x0123456789abcdef -> 0x67452301 jited:1
Oops: Exception in kernel mode, sig: 4 [#1]
BE PAGE_SIZE=4K SMP NR_CPUS=24 QEMU e500
Modules linked in: test_bpf(+)
CPU: 0 PID: 76 Comm: insmod Not tainted 5.14.0-03771-g98c2059e008a-dirty #1
NIP: 8000000000061c3c LR: 80000000006dea64 CTR: 8000000000061c18
REGS: c0000000032d3420 TRAP: 0700 Not tainted (5.14.0-03771-g98c2059e008a-dirty)
MSR: 0000000080089000 <EE,ME> CR: 88002822 XER: 20000000 IRQMASK: 0
<...>
NIP [8000000000061c3c] 0x8000000000061c3c
LR [80000000006dea64] .__run_one+0x104/0x17c [test_bpf]
Call Trace:
.__run_one+0x60/0x17c [test_bpf] (unreliable)
.test_bpf_init+0x6a8/0xdc8 [test_bpf]
.do_one_initcall+0x6c/0x28c
.do_init_module+0x68/0x28c
.load_module+0x2460/0x2abc
.__do_sys_init_module+0x120/0x18c
.system_call_exception+0x110/0x1b8
system_call_common+0xf0/0x210
--- interrupt: c00 at 0x101d0acc
<...>
---[ end trace 47b2bf19090bb3d0 ]---
Illegal instruction
The illegal instruction turned out to be 'ldbrx' emitted for
BPF_FROM_[L|B]E, which was only introduced in ISA v2.06. Guard use of
the same and implement an alternative approach for older processors.
CVSS Score
5.5
EPSS Score
0.0
Published
2024-06-20
In the Linux kernel, the following vulnerability has been resolved:
drm/msm/dsi: invalid parameter check in msm_dsi_phy_enable
The function performs a check on the "phy" input parameter, however, it
is used before the check.
Initialize the "dev" variable after the sanity check to avoid a possible
NULL pointer dereference.
Addresses-Coverity-ID: 1493860 ("Null pointer dereference")
CVSS Score
5.5
EPSS Score
0.0
Published
2024-06-20
In the Linux kernel, the following vulnerability has been resolved:
net: fix information leakage in /proc/net/ptype
In one net namespace, after creating a packet socket without binding
it to a device, users in other net namespaces can observe the new
`packet_type` added by this packet socket by reading `/proc/net/ptype`
file. This is minor information leakage as packet socket is
namespace aware.
Add a net pointer in `packet_type` to keep the net namespace of
of corresponding packet socket. In `ptype_seq_show`, this net pointer
must be checked when it is not NULL.
CVSS Score
7.1
EPSS Score
0.0
Published
2024-06-20
In the Linux kernel, the following vulnerability has been resolved:
scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put()
The bnx2fc_destroy() functions are removing the interface before calling
destroy_work. This results multiple WARNings from sysfs_remove_group() as
the controller rport device attributes are removed too early.
Replace the fcoe_port's destroy_work queue. It's not needed.
The problem is easily reproducible with the following steps.
Example:
$ dmesg -w &
$ systemctl enable --now fcoe
$ fipvlan -s -c ens2f1
$ fcoeadm -d ens2f1.802
[ 583.464488] host2: libfc: Link down on port (7500a1)
[ 583.472651] bnx2fc: 7500a1 - rport not created Yet!!
[ 583.490468] ------------[ cut here ]------------
[ 583.538725] sysfs group 'power' not found for kobject 'rport-2:0-0'
[ 583.568814] WARNING: CPU: 3 PID: 192 at fs/sysfs/group.c:279 sysfs_remove_group+0x6f/0x80
[ 583.607130] Modules linked in: dm_service_time 8021q garp mrp stp llc bnx2fc cnic uio rpcsec_gss_krb5 auth_rpcgss nfsv4 ...
[ 583.942994] CPU: 3 PID: 192 Comm: kworker/3:2 Kdump: loaded Not tainted 5.14.0-39.el9.x86_64 #1
[ 583.984105] Hardware name: HP ProLiant DL120 G7, BIOS J01 07/01/2013
[ 584.016535] Workqueue: fc_wq_2 fc_rport_final_delete [scsi_transport_fc]
[ 584.050691] RIP: 0010:sysfs_remove_group+0x6f/0x80
[ 584.074725] Code: ff 5b 48 89 ef 5d 41 5c e9 ee c0 ff ff 48 89 ef e8 f6 b8 ff ff eb d1 49 8b 14 24 48 8b 33 48 c7 c7 ...
[ 584.162586] RSP: 0018:ffffb567c15afdc0 EFLAGS: 00010282
[ 584.188225] RAX: 0000000000000000 RBX: ffffffff8eec4220 RCX: 0000000000000000
[ 584.221053] RDX: ffff8c1586ce84c0 RSI: ffff8c1586cd7cc0 RDI: ffff8c1586cd7cc0
[ 584.255089] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb567c15afc00
[ 584.287954] R10: ffffb567c15afbf8 R11: ffffffff8fbe7f28 R12: ffff8c1486326400
[ 584.322356] R13: ffff8c1486326480 R14: ffff8c1483a4a000 R15: 0000000000000004
[ 584.355379] FS: 0000000000000000(0000) GS:ffff8c1586cc0000(0000) knlGS:0000000000000000
[ 584.394419] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 584.421123] CR2: 00007fe95a6f7840 CR3: 0000000107674002 CR4: 00000000000606e0
[ 584.454888] Call Trace:
[ 584.466108] device_del+0xb2/0x3e0
[ 584.481701] device_unregister+0x13/0x60
[ 584.501306] bsg_unregister_queue+0x5b/0x80
[ 584.522029] bsg_remove_queue+0x1c/0x40
[ 584.541884] fc_rport_final_delete+0xf3/0x1d0 [scsi_transport_fc]
[ 584.573823] process_one_work+0x1e3/0x3b0
[ 584.592396] worker_thread+0x50/0x3b0
[ 584.609256] ? rescuer_thread+0x370/0x370
[ 584.628877] kthread+0x149/0x170
[ 584.643673] ? set_kthread_struct+0x40/0x40
[ 584.662909] ret_from_fork+0x22/0x30
[ 584.680002] ---[ end trace 53575ecefa942ece ]---
CVSS Score
5.5
EPSS Score
0.0
Published
2024-06-20
In the Linux kernel, the following vulnerability has been resolved:
ASoC: ops: Reject out of bounds values in snd_soc_put_volsw()
We don't currently validate that the values being set are within the range
we advertised to userspace as being valid, do so and reject any values
that are out of range.
CVSS Score
7.1
EPSS Score
0.0
Published
2024-06-20
In the Linux kernel, the following vulnerability has been resolved:
ASoC: hdmi-codec: Fix OOB memory accesses
Correct size of iec_status array by changing it to the size of status
array of the struct snd_aes_iec958. This fixes out-of-bounds slab
read accesses made by memcpy() of the hdmi-codec driver. This problem
is reported by KASAN.
CVSS Score
7.1
EPSS Score
0.0
Published
2024-06-20
In the Linux kernel, the following vulnerability has been resolved:
selinux: fix double free of cond_list on error paths
On error path from cond_read_list() and duplicate_policydb_cond_list()
the cond_list_destroy() gets called a second time in caller functions,
resulting in NULL pointer deref. Fix this by resetting the
cond_list_len to 0 in cond_list_destroy(), making subsequent calls a
noop.
Also consistently reset the cond_list pointer to NULL after freeing.
[PM: fix line lengths in the description]
CVSS Score
7.8
EPSS Score
0.0
Published
2024-06-20
In the Linux kernel, the following vulnerability has been resolved:
ovl: fix NULL pointer dereference in copy up warning
This patch is fixing a NULL pointer dereference to get a recently
introduced warning message working.
CVSS Score
5.5
EPSS Score
0.0
Published
2024-06-20
In the Linux kernel, the following vulnerability has been resolved:
rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink()
While looking at one unrelated syzbot bug, I found the replay logic
in __rtnl_newlink() to potentially trigger use-after-free.
It is better to clear master_dev and m_ops inside the loop,
in case we have to replay it.
CVSS Score
7.8
EPSS Score
0.0
Published
2024-06-20
In the Linux kernel, the following vulnerability has been resolved:
net: amd-xgbe: Fix skb data length underflow
There will be BUG_ON() triggered in include/linux/skbuff.h leading to
intermittent kernel panic, when the skb length underflow is detected.
Fix this by dropping the packet if such length underflows are seen
because of inconsistencies in the hardware descriptors.
CVSS Score
5.5
EPSS Score
0.0
Published
2024-06-20