CVE-2022-50486

net: ethernet: ti: Fix return type of netcp_ndo_start_xmit()

State: Published
Severity: Not scored
Published: Oct 4, 2025
Updated: May 11, 2026
Reserved: Oct 4, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

net: ethernet: ti: Fix return type of netcp_ndo_start_xmit()

With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. A proposed warning in clang aims to catch these at compile time, which reveals:

drivers/net/ethernet/ti/netcp_core.c:1944:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict] .ndo_start_xmit = netcp_ndo_start_xmit, ^~~~~~~~~~~~~~~~~~~~ 1 error generated.

->ndo_start_xmit() in 'struct net_device_ops' expects a return type of 'netdev_tx_t', not 'int'. Adjust the return type of netcp_ndo_start_xmit() to match the prototype's to resolve the warning and CFI failure.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	84640e27f23041d474c31d3362c3e2185ad68ec2 to before a447479ea2cf35603b5739ea947885024b901222Affected 84640e27f23041d474c31d3362c3e2185ad68ec2 to before 17bb9bdf701f3e811a9f4820b08b9538ade2641cAffected 84640e27f23041d474c31d3362c3e2185ad68ec2 to before d837d74eae077cc3ef9e191ba8535b5f602d4673Affected 84640e27f23041d474c31d3362c3e2185ad68ec2 to before dbe1a6b930ae9647e8ce0b684c903ac67d4398ebAffected 84640e27f23041d474c31d3362c3e2185ad68ec2 to before 5b0b6553bf4ad3a435a57e02c68d6075f384e1beAffected 84640e27f23041d474c31d3362c3e2185ad68ec2 to before a413ebb6049edd881c6427cfa25a7efddd6a4f74Affected 84640e27f23041d474c31d3362c3e2185ad68ec2 to before 765636e58ba505cfe4927eda7ee83791b1c6402aAffected 84640e27f23041d474c31d3362c3e2185ad68ec2 to before 1e4953b826e12b31995564a459dbd4e9e4604a35Affected 84640e27f23041d474c31d3362c3e2185ad68ec2 to before 63fe6ff674a96cfcfc0fa8df1051a27aa31c70b4Affected
LinuxLinux	4.0Affected before 4.0Not affected 4.9.337 through 4.9.Not affected 4.14.303 through 4.14.Not affected 4.19.270 through 4.19.Not affected 5.4.229 through 5.4.Not affected 5.10.163 through 5.10.Not affected 5.15.86 through 5.15.Not affected 6.0.16 through 6.0.Not affected 6.1.2 through 6.1.Not affected 6.2 and laterNot affected

Product

Versions

LinuxLinux

84640e27f23041d474c31d3362c3e2185ad68ec2 to before a447479ea2cf35603b5739ea947885024b901222Affected
84640e27f23041d474c31d3362c3e2185ad68ec2 to before 17bb9bdf701f3e811a9f4820b08b9538ade2641cAffected
84640e27f23041d474c31d3362c3e2185ad68ec2 to before d837d74eae077cc3ef9e191ba8535b5f602d4673Affected
84640e27f23041d474c31d3362c3e2185ad68ec2 to before dbe1a6b930ae9647e8ce0b684c903ac67d4398ebAffected
84640e27f23041d474c31d3362c3e2185ad68ec2 to before 5b0b6553bf4ad3a435a57e02c68d6075f384e1beAffected
84640e27f23041d474c31d3362c3e2185ad68ec2 to before a413ebb6049edd881c6427cfa25a7efddd6a4f74Affected
84640e27f23041d474c31d3362c3e2185ad68ec2 to before 765636e58ba505cfe4927eda7ee83791b1c6402aAffected
84640e27f23041d474c31d3362c3e2185ad68ec2 to before 1e4953b826e12b31995564a459dbd4e9e4604a35Affected
84640e27f23041d474c31d3362c3e2185ad68ec2 to before 63fe6ff674a96cfcfc0fa8df1051a27aa31c70b4Affected

LinuxLinux

4.0Affected
before 4.0Not affected
4.9.337 through 4.9.*Not affected
4.14.303 through 4.14.*Not affected
4.19.270 through 4.19.*Not affected
5.4.229 through 5.4.*Not affected
5.10.163 through 5.10.*Not affected
5.15.86 through 5.15.*Not affected
6.0.16 through 6.0.*Not affected
6.1.2 through 6.1.*Not affected
6.2 and laterNot affected

References

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