UBUNTU-CVE-2021-47335

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid racing on fsyncentryslab by multi filesystem instances As syzbot reported, there is an use-after-free issue during f2fs recovery: Use-after-free write at 0xffff88823bc16040 in kfence-10:...

UBUNTU-CVE-2021-47291

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix another slab-out-of-bounds in fib6nhflushexceptions While running the self-tests on a KASAN enabled kernel, I observed a slab-out-of-bounds splat very similar to the one reported in commit 821bbf79fe46 "ipv6: Fix KASAN:...

CVE-2021-47404 HID: betop: fix slab-out-of-bounds Write in betop_probe

In the Linux kernel, the following vulnerability has been resolved: HID: betop: fix slab-out-of-bounds Write in betopprobe Syzbot reported slab-out-of-bounds Write bug in hid-betopff driver. The problem is the driver assumes the device must have an input report but some malicious devices violate...

CVE-2021-47404 HID: betop: fix slab-out-of-bounds Write in betop_probe

In the Linux kernel, the following vulnerability has been resolved: HID: betop: fix slab-out-of-bounds Write in betopprobe Syzbot reported slab-out-of-bounds Write bug in hid-betopff driver. The problem is the driver assumes the device must have an input report but some malicious devices violate...

CVE-2021-47404

Summary (CVE-2021-47404): The issue stems from a slab-out-of-bounds write in the HID Betop driver (betopff) in the Linux kernel. Syzbot observed a write beyond slab bounds due to assuming an input report exists; malicious devices can violate this assumption. The public advisories, including Astra...

CVE-2021-47335 f2fs: fix to avoid racing on fsync_entry_slab by multi filesystem instances

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid racing on fsyncentryslab by multi filesystem instances As syzbot reported, there is an use-after-free issue during f2fs recovery: Use-after-free write at 0xffff88823bc16040 in kfence-10:...

CVE-2021-47335

CVE-2021-47335 (Linux kernel, f2fs) : A race on the global fsync_entry_slab across multi filesystem instances caused a use-after-free in the slab cache during f2fs recovery. The root cause is concurrent access to the slab pointer when multiple f2fs mounts exist, leading to a use-after-free during...

CVE-2021-47309 net: validate lwtstate->data before returning from skb_tunnel_info()

In the Linux kernel, the following vulnerability has been resolved: net: validate lwtstate-data before returning from skbtunnelinfo skbtunnelinfo returns pointer of lwtstate-data as iptunnelinfo type without validation. lwtstate-data can have various types such as mplsiptunnelencap, etc and these...

CVE-2021-47309

CVE-2021-47309 affects the Linux kernel's net/tunnel code: skb_tunnel_info() may return a pointer to lwtstate->data without validating its type, risking out-of-bounds reads such as during VXLAN routing. Connected advisories (SUSE-SU-2024:2561-1 and related OSV/Nessus entries) confirm the fix i...

CVE-2021-47309 net: validate lwtstate->data before returning from skb_tunnel_info()

In the Linux kernel, the following vulnerability has been resolved: net: validate lwtstate-data before returning from skbtunnelinfo skbtunnelinfo returns pointer of lwtstate-data as iptunnelinfo type without validation. lwtstate-data can have various types such as mplsiptunnelencap, etc and these...

CVE-2021-47309

In the Linux kernel, the following vulnerability has been resolved: net: validate lwtstate-data before returning from skbtunnelinfo skbtunnelinfo returns pointer of lwtstate-data as iptunnelinfo type without validation. lwtstate-data can have various types such as mplsiptunnelencap, etc and these...

CVE-2021-47291 ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix another slab-out-of-bounds in fib6nhflushexceptions While running the self-tests on a KASAN enabled kernel, I observed a slab-out-of-bounds splat very similar to the one reported in commit 821bbf79fe46 "ipv6: Fix KASAN:...

CVE-2021-47291

CVE-2021-47291 corresponds to a Linux kernel vulnerability where a slab-out-of-bounds occurs in ipv6 fib6_nh_flush_exceptions during KASAN-self-test scenarios. The issue is tied to the handling/initialization of fib6_metrics when an nh is provided, and the fix mirrors an earlier patch by explicit...

CVE-2021-47291

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix another slab-out-of-bounds in fib6nhflushexceptions While running the self-tests on a KASAN enabled kernel, I observed a slab-out-of-bounds splat very similar to the one reported in commit 821bbf79fe46 "ipv6: Fix KASAN:...

CVE-2021-47240 net: qrtr: fix OOB Read in qrtr_endpoint_post

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix OOB Read in qrtrendpointpost Syzbot reported slab-out-of-bounds Read in qrtrendpointpost. The problem was in wrong size type: if len != ALIGNsize, 4 + hdrlen goto err; If size from qrtrhdr is 4294967293 0xfffffffd,...

CVE-2021-47300: Out-of-bounds Read

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix tailcallreachable rejection for interpreter when jit failed During testing of f263a81451c1 "bpf: Track subprog poke descriptors correctly and fix use-after-free" under various failure conditions, for example, when...

CVE-2021-47240: Out-of-bounds Read

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix OOB Read in qrtrendpointpost Syzbot reported slab-out-of-bounds Read in qrtrendpointpost. The problem was in wrong size type: if len != ALIGNsize, 4 + hdrlen goto err; If size from qrtrhdr is 4294967293 0xfffffffd,...

CVE-2023-52755: Out-of-bounds Write

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab out of bounds write in smbinheritdacl slab out-of-bounds write is caused by that offsets is bigger than pntsd allocation size. This patch add the check to validate 3 offsets using allocation size...

CVE-2021-47291: Out-of-bounds Read

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix another slab-out-of-bounds in fib6nhflushexceptions While running the self-tests on a KASAN enabled kernel, I observed a slab-out-of-bounds splat very similar to the one reported in commit 821bbf79fe46 "ipv6: Fix KASAN:...

CVE-2021-47404: Out-of-bounds Write

In the Linux kernel, the following vulnerability has been resolved: HID: betop: fix slab-out-of-bounds Write in betopprobe Syzbot reported slab-out-of-bounds Write bug in hid-betopff driver. The problem is the driver assumes the device must have an input report but some malicious devices violate...